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1,716 media by topic ∙ page 1 of 18
Thomas Barclay, June 28, 1786, Agreement on Ship Signals to Distinguish Moroccan and American Vessels

Thomas Barclay, June 28, 1786, Agreement on Ship Signals to Distinguis...

Agreement on Ship Signals to Distinguish Moroccan and American Vessels

"Derry Castle" Signal. Enderby Island

"Derry Castle" Signal. Enderby Island

Public domain vintage photo from New Zealand archive, free to use, no copyright restrictions image - Picryl description

Science, or sport? - A modern spectacle after an old model / J. Keppler.

Science, or sport? - A modern spectacle after an old model / J. Kepple...

Print shows a group of explorers of the polar regions, representing discovery and exploration, floating on an ice floe, they may all be on the verge of death; weighing judgement are James G. Bennett of the New ... More

Bunting - Drawing. Public domain image.

Bunting - Drawing. Public domain image.

Extending to the top of the plate is a line of flying signals, seen from the deck of the ship to which they belong. On the deck are five figures, three in the dress of sailors. Beyond, at the right, there are v... More

CN 3254 with Signal Bridge - Steam locomotive, Public domain image

CN 3254 with Signal Bridge - Steam locomotive, Public domain image

Canadian National 3254, built in 1917, blasts under on of the DL&W's historic signal bridges. These signals allowed trains to follow each other very closely using green (full speed), yellow (be prepared to stop... More

Men on curb, signals to offices

Men on curb, signals to offices

A group of men standing next to each other. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Crowd on curb in fron of building, signals to offices

Crowd on curb in fron of building, signals to offices

Public domain photograph of crowd, free to use, no copyright restrictions image - Picryl description

Rookie Senator belives in signs. Washington, D.C., Jan. 5. Rookie Senator Ed. C. Johnson, Democrat of Colorado, signals the Capitol elevator on way to attend the opening session of the 75th Congress which convened today

Rookie Senator belives in signs. Washington, D.C., Jan. 5. Rookie Sena...

A black and white photo of a man in a suit and hat. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Map of the island of Porto Rico showing the lines of signal communication, telegraph, telephone, and heliograph, operated by the Signals Corps, U.S. Army, with military posts.

Map of the island of Porto Rico showing the lines of signal communicat...

"Based on map furnished by the War Department, Adjuntant General Office, Military Information Division." Available also through the Library of Congress web site as a raster image.

Final check, weather device. Washington, D.C., Sept. 13. L.L. Stockman, also of the Bureau of Standards, Radium Division, uses a wave meter to check the radiometeorograph before attaching it to the parachute and the balloon. When the inflated bag breaks, which it usually does after several hours flying, the instrument is parachuted to the ground. Many times the instrument is found and returned to the bureau. The radiometeorograph contains two radio tubes, a miniature dry cell battery and devices which record and send the weather signals which, in turn, are recorded on a chronograph in Dr. Astin's bood [?] radio room.

Final check, weather device. Washington, D.C., Sept. 13. L.L. Stockman...

A black and white photo of a man holding a camera. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Puck magazine cover - Setting the signals / Grant Hamilton.

Puck magazine cover - Setting the signals / Grant Hamilton.

Illustration shows Uncle Sam raising a red signal flag labeled "Big Crops" and "Prosperity" and a yellow signal flag labeled "Business" and "Confidence" over the U.S. Capitol building. In the background, delega... More

Kane, Shipman & Colvin present When knighthood was in flower by Chas. Major & Paul Kester

Kane, Shipman & Colvin present When knighthood was in flower by Chas. ...

Caption: The signal. Created and "copyright 1905 by The U.S. Lithograph Co., Cin. & N.Y." No. 8767. Forms part of: Theatrical poster collection (Library of Congress)

Okolo shli︠u︡za machta so znakami, ukazyvai︠u︡shchimi glubinu farvatera v r. Slavi︠a︡nki︠e︡. [Rossiĭskai︠a︡ imperii︠a︡]

Okolo shli︠u︡za machta so znakami, ukazyvai︠u︡shchimi glubinu farvater...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Union Station, [Washington, D.C.], signals & tracks

Union Station, [Washington, D.C.], signals & tracks

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Signallers working at the headquarters of R.E.S.S. in France, during World War I

Signallers working at the headquarters of R.E.S.S. in France, during W...

Just like a team of operators working at a busy telephone switchboard, this image shows the network of communications at company HQ that was required to co-ordinate an armys activities. The object immediately i... More

Signals to Curb Brokers - Public domain portrait photograph

Signals to Curb Brokers - Public domain portrait photograph

An old black and white photo of a boy sitting on a ledge. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Signals to Curb Brokers - Glass negative photogrpah. Public domain.

Signals to Curb Brokers - Glass negative photogrpah. Public domain.

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

WOMAN'S NATIONAL SERVICE SCHOOL, UNDER WOMAN'S SECTION, NAVY LEAGUE. FIELD SIGNALS

WOMAN'S NATIONAL SERVICE SCHOOL, UNDER WOMAN'S SECTION, NAVY LEAGUE. F...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Explaining guide of internat'l [i.e. international] signals

Explaining guide of internat'l [i.e. international] signals

Photograph shows two women looking at a board on which drawings of the designs of international signal flag are displayed, at the Brooklyn Navy Yard, Brooklyn, New York. (Source: Flickr Commons project, 2015)

Behind the Western Front. Light signalling station in the trees. The advancing infantry sends up light signals to directthe artillery fire. July 1917

Behind the Western Front. Light signalling station in the trees. The a...

German Military Activities and Personnel Public domain photograph - German army, military forces during World War One, free to use, no copyright restrictions image - Picryl description

American Red Cross - Soliciting Funds - Miscellaneous - Traffic Policemen display Red Cross fan. Even the traffic policemen were enrolled in the ranks of the Red Cross workers on May 20, 1918, when they all used Red Cross fans as stop signals

American Red Cross - Soliciting Funds - Miscellaneous - Traffic Police...

Date Taken: 5/20/1918 Photographer: International Film Service American Red Cross - Soliciting Funds - Miscellaneous

060812-N-0685C-003 (Aug. 12, 2006)Onboard the US Navy (USN) Nimitz Class Aircraft Carrier, USS THEODORE ROOSEVELT (CVN 71), a USN (Yellow Shirt) Plane Directors signals as guest ride the aircraft elevator from the hangar bay to the flight deck, during a Friends And Family Day Cruise. The nuclear-powered aircraft carrier is currently underway in the Atlantic Ocean maintaining qualifications as part of the Fleet Response Plan. U.S. Navy photo by Mass Communications SPECIALIST SEAMAN Javier Capella (RELEASED)

060812-N-0685C-003 (Aug. 12, 2006)Onboard the US Navy (USN) Nimitz Cla...

The original finding aid described this photograph as: Base: USS Theodore Roosevelt (CVN 71) Country: Atlantic Ocean (AOC) Scene Camera Operator: MCSN Javier Capella, USN Release Status: Released to Public ... More

Aviation Boatswain's Mate (Handling) 2nd Class Steven Lilly signals to an MV-22 Osprey.

Aviation Boatswain's Mate (Handling) 2nd Class Steven Lilly signals to...

ATLANTIC OCEAN (Jan. 27, 2013) Aviation Boatswain's Mate (Handling) 2nd Class Steven Lilly signals to an MV-22 Osprey from the Marine Tiltrotor Operational Test and Evaluation Squadron (VMX) 22 as it prepares t... More

U.S. Navy PETTY Officer 2nd Class Daniel Wiseman Electrician's Mate 2nd Class, signals to move a fork lift while replacing a light fixture aboard the U.S. Navy Aircraft Carrier USS ENTERPRISE (CVN 65). The USS ENTERPRISE (CVN 65) Carrier Strike Group are currently underway in the Arabian Sea on a six-month deployment in support of the Global War On Terrorism. Sept. 4, 2006. (U.S. Navy photo by Mass Communication SPECIALIST 3rd Class Marcel A. Barbeau) (Released)

U.S. Navy PETTY Officer 2nd Class Daniel Wiseman Electrician's Mate 2n...

The original finding aid described this photograph as: Base: USS Enterprise (CVN 65) Scene Camera Operator: MC3 Marcel A. Barbeau, USN Release Status: Released to Public Combined Military Service Digital Pho... More

US Navy (USN) Aviation Ordnanceman Third Class (AO3) Jason Boulin (foreground) signals to USN Lieutenant (LT) Matt Menza, an EA-6B Prowler aircraft Pilot assigned to Electronic Attack Squadron One Four Zero (VAQ-140) while conducting a preflight check of the aircraft aboard the US Navy (USN) NIMITZ CLASS: Aircraft Carrier USS GEORGE WASHINGTON (CVN 73). CVN 73 and embarked Carrier Air Wing Seven (CVW-7) are on a scheduled deployment in support of Operation IRAQI FREEDOM

US Navy (USN) Aviation Ordnanceman Third Class (AO3) Jason Boulin (for...

The original finding aid described this photograph as: Base: USS George Washington (CVN 73) Scene Camera Operator: PHAN Michael D. Blackwell, USN Release Status: Released to Public Combined Military Service ... More

US Navy (USN) Aviation Boatswains Mate (Handler) 2nd Class (AB2) Daniel Thornley signals an F-18 Hornet into position onto one of the four steam-powered catapults on the flight deck of the USN Nimitz Class Aircraft Carrier USS HARRY S TRUMAN (CVN 75) prior to launching it to provide Close Air Support (CAS) and conduct intelligence, surveillance, and reconnaissance missions over Iraq in support of the Global War on Terrorism (GWOT)

US Navy (USN) Aviation Boatswains Mate (Handler) 2nd Class (AB2) Danie...

The original finding aid described this photograph as: Base: USS Harry S. Truman (CVN 75) Scene Camera Operator: PHAN Ryan O'Connor, Usn Release Status: Released to Public Combined Military Service Digital P... More

A Landing Signalman Enlisted (LSE) assigned to the Chargers of Helicopter Anti-Submarine Squadron Fourteen (HS-14), signals to an MH-60S Knighthawk after lift-off.

A Landing Signalman Enlisted (LSE) assigned to the Chargers of Helicop...

Central Command Area of Responsibility (Feb. 17, 2003) A Landing Signalman Enlisted (LSE) assigned to the Chargers of Helicopter Anti-Submarine Squadron Fourteen (HS-14), signals to an MH-60S Knighthawk after l... More

Aviation Mechanic Airman Alexandria Reid, from Litchfield, N.H., signals to the pilot of an F/A-18 during pre-flight procedures aboard the aircraft carrier USS Ronald Reagan (CVN 76).

Aviation Mechanic Airman Alexandria Reid, from Litchfield, N.H., signa...

PACIFIC OCEAN (Apr. 18, 2011) Capt. Kevin Mannix, deputy commander of Carrier Air Wing (CVW) 14, signals to Aviation Mechanic Airman Alexandria Reid, from Litchfield, N.H., during pre-flight procedures aboard t... More

Colored radio recorder is latest in radio receivers. E.B. Judson of the Bureau of Standards and his two colored radio recorder, automatically recording signals in two colors, red and black. This automatic receiver is capable of receiving signals from American or European stations

Colored radio recorder is latest in radio receivers. E.B. Judson of th...

A black and white photo of a man in a suit, Library of Congress Harris and Ewing collection Title from unverified caption data on negative or negative sleeve. On sleeve: Watch Your Credit Line. Gift; Harris & ... More

Colored radio recorder is latest in radio receivers. E.B. Judson of the Bureau of Standards and his two colored radio recorder, automatically recording signals in two colors, red and black. This automatic receiver is capable of receiving signals from American or European stations

Colored radio recorder is latest in radio receivers. E.B. Judson of th...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

The eyes and ears of the army postcard

The eyes and ears of the army postcard

Public domain photograph of vintage postcard - Picryl description

The admiral wants to see the signal man

The admiral wants to see the signal man

Public domain photograph of vintage postcard - Picryl description

Signal corp in action postcard, the Tichnor brothers collection

Signal corp in action postcard, the Tichnor brothers collection

Public domain photograph of vintage postcard - Picryl description

Signal corp in action postcard, the Tichnor brothers collection

Signal corp in action postcard, the Tichnor brothers collection

Public domain photograph of vintage postcard - Picryl description

Government expert listens to broadcasts of automobile [...] The Automotive Section of the Bureau of Standards is studying the anti-knock proportion of fuel used in automobile and aircraft engines and the scientist in this photograph is "listening in" to the signals of an engine instead of listening to a radio broadcasting station. Eventually, these studies may evolve a new engine, one that will use fuel more economically and efficiently

Government expert listens to broadcasts of automobile [...] The Automo...

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Au Sable Light Station, Fog Signals, Southern Shore of Lake Superior, Grand Marais, Alger County, MI

Au Sable Light Station, Fog Signals, Southern Shore of Lake Superior, ...

Unprocessed Field note material exists for this structure: FN-56 Survey number: HABS MI-317-B Building/structure dates: 1897 Initial Construction

Receiving stratosphere weather data. B.W. Brown, of the U.S. Bureau of Standards staff, is shown here at the radio receiving set which captures signals from a new type of transmitter used in gathering meteorological data from an altitude of 14 miles

Receiving stratosphere weather data. B.W. Brown, of the U.S. Bureau of...

Public domain photograph of building interior, office, room, free to use, no copyright restrictions image - Picryl description

Gathering meteorological data from stratosphere. Dr. L.F. Curtiss, of the U.S. Bureau of Standards, is shown here with part of the equipment he uses in experiments using radio to gather meteorological data at great altitudes. The complete radio apparatus for attachment to a balloon weighs less than two pounds, and preliminary trials show that the signals can be heard clearly at altitudes of 14 miles and at distances of 80 miles. A direction finder [...]bles experimenters to determine the location [...] he balloon the instant the radio wave is [...] out. 10/17/35

Gathering meteorological data from stratosphere. Dr. L.F. Curtiss, of ...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Navy Sea League Cadets with signal flags at Snapper Island in Sydney

Navy Sea League Cadets with signal flags at Snapper Island in Sydney

This photograph depicts the Navy Sea League Cadets with signal flags at Snapper Island in Sydney during an inspection lead by Federal Minister for Defence, Sir Robert Archdale Parkhill, on 20 July 1935. Ministe... More

Palestine disturbances 1936. The first divisional A corps, Royal Signals, unloading stores in camp [outside Jerusalem]

Palestine disturbances 1936. The first divisional A corps, Royal Signa...

Picryl description: Public domain photograph of a tent, military, or refugee camp, temporary settlement, free to use, no copyright restrictions.

G.M. Clemence Ast. Astronomer file records from the reorder. On the right is the time signal transmitting clock connected by direct wire to Arlington and Annapolis. All signals are broadcast from there and also from San Francisco to Honolulu and Balboa

G.M. Clemence Ast. Astronomer file records from the reorder. On the ri...

Public domain photograph of building interior, office, room, free to use, no copyright restrictions image - Picryl description

Weather signals recorded. add weather device. Washington, D.C., Sept. 13. By means of this chronograph, Dr. L.V. Astin records the weather signals sent down from the radiometeorograph attached to the balloon as it soars anywhere from 9 to 11 miles in the upper air. 9/13/37

Weather signals recorded. add weather device. Washington, D.C., Sept. ...

Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientists of the National Bureau of Standards today conducted a test of the new radiometeorograph, a device attached to parachute and balloon and sent into the skies to radio back signals giving the pressure, temperature and humidity of the upper air. Preparing the balloon for the ascension are Dr. L.V. Astin, (left) of the Bureau's Electrical Division, and Dr. L.F. Curtiss, head of the Radium Division. The balloon carries the instrument as high as 50,000 or 60,000 feet. 9 to 11 miles high. Today's test was conducted for the U.S. Weather Bureau. 9/13/37

U.S. experts test weather device. Washington, D.C., Sept. 13. Scientis...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Measuring relative humidity by radio. Washington, D.C. June 9. The hair element for measuring relative humidity in radio weather sounding balloons has proved innacurate because of very slow response at the cold temperatures encountered in the upper atmosphere. F.W. Dunmore, Radio Engineer of National Bureau of Standards, has just developed a new device for the U.S.Navy which will overcome this effect and at the same time will not be affected in response by temperature. He is shown in the photograph observing a graph on the recorder being produced by radio signals from an ascending balloon carrying the new device. This is the first record obtained with this new developement and shows a repidity of response much greater than the hair hygrometers Hitherto used. 6/9/37

Measuring relative humidity by radio. Washington, D.C. June 9. The hai...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Add automatic river gauge. After dialing the Potomac River Gauge, A.L. King, U.S. Weather Bureau observer, waits for the first buzz, then sets his stop watch which continues until the buzz signal is again heard then he stops the watch. The time interval between the two signals is converted into the gauge height by dividing the number of seconds in the interval by 30 as gauge height above a field zero point is represented 8/30 seconds for each vertical foot of water, 4/9/38

Add automatic river gauge. After dialing the Potomac River Gauge, A.L....

A man sitting at a desk talking on a phone. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

PMG arrives to hear president deliver message to Congress. Washington, D.C., Jan. 3. Postmaster General James A. Farley signals the house members elevator to take him to the House floor where he heard President Roosevelt deliver a message to a joint session today, 1/3/38

PMG arrives to hear president deliver message to Congress. Washington,...

A black and white photo of a man opening a door. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Long Bell Lumber Company, Cowlitz County, Washington. Whistle punk on a donkey engine. He gives signals for yarding logs by means of the electrical button in his right hand

Long Bell Lumber Company, Cowlitz County, Washington. Whistle punk on ...

Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.

Shipbuilding. "Liberty" ships. This worker is watching for signals from a colleague as he rolls cold steel plate to a desired shape on this plate roller, designed in Germany. All parts are prefabricated in this Eastern plant which formerly turned out freight cars. The completed sections are carried to the ways on flat cars. Bethlehem-Fairfield Shipyards Inc., Baltimore, Maryland

Shipbuilding. "Liberty" ships. This worker is watching for signals fro...

Picryl description: Public domain photograph of workers, war production, aircraft, airfield, the 1930s -1940s, free to use, no copyright restrictions.

Sergeant John Fahey Gerrity, former Washington Post reporter, signals to comrades during basic training at the Marine Corps base at Parris Island, South Carolina. Sergeant Gerrity is now serving as a fighting reporter in a combat area for the Division of Public Relations, U.S. Marine Corps

Sergeant John Fahey Gerrity, former Washington Post reporter, signals ...

Public domain photograph of South Carlina in 1930s, free to use, no copyright restrictions image - Picryl description

Pittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. Transportation within the mine is as carefully planned and coordinated as in a busy freight yard. A system of block signals and switches and miles of track make it possible to move out thousands of tons of coal a day

Pittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsbu...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

New York, New York. The Lincoln School of Teachers' College, Columbia University. Girl announcing a radio broadcast to Latin America in Spanish under the auspices of the Coordinator of Inter-American Affairs. The announcer is watching for signals

New York, New York. The Lincoln School of Teachers' College, Columbia ...

Public domain image related to President Abraham Lincoln, gelatin silver print, free to use, no copyright restrictions image - Picryl description

Three Thirds of the Nation. Edward Arnold hits punch line on the War Production Board (WPB) radio program "Steel," presented over Blue Network on May 6. In background, director Sam Pierce signals Meredith Wilson to come in with music

Three Thirds of the Nation. Edward Arnold hits punch line on the War P...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Chicago, Illinois. By means of light signals along the track, the engine foreman in his office gives directions to the engineer pushing a train over the hump at an Illinois Central Railroad yard

Chicago, Illinois. By means of light signals along the track, the engi...

Picryl description: Public domain photograph of an office worker, 1930s, free to use, no copyright restrictions.

Washington, D.C. The U.S. Weather Bureau station at the National Airport. High frequency radio receiver recording signals from small radio transmitter attached to radios on a balloon aloft. The signals reveal temperature, humidity and pressure at various altitudes

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

Rear brakeman gets on the caboose and signals engineer that all's well at the rear end of the Chicago and Northwestern Railroad freight train

Rear brakeman gets on the caboose and signals engineer that all's well...

Picryl description: Public domain image of a locomotive, train tracks, rail transportation, railroad, railway, 19th-20th century, free to use, no copyright restrictions.

Freight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and Hammond, Indiana. Having inspected the train, the conductor signals the ok with a "fusee"

Freight operations on the Indiana Harbor Belt railroad between Chicago...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Freight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The rear brakeman signals the engineer to apply and release the brakes as a test. This is the "release" sign

Freight train operations on the Chicago and Northwestern Railroad betw...

Public domain image of Chicago city buildings, cityscape, free to use, no copyright restrictions image - Picryl description

Baseball players in war production. "Safe," signals George Stovall, retired manager of the Cleveland Indians as Vince DiMaggio slides home during a lunch-hour softball game in the California Shipbuilding Corporation shipyards. DiMaggio, Pittsburgh Pirates outfielder, has been a warehouseman at the California shipyards since last fall; Stovall has worked as checker in the yards for more than a year

Baseball players in war production. "Safe," signals George Stovall, re...

Public domain photograph of military personnel, army, militia, infantry, free to use, no copyright restrictions image - Picryl description

On the Atchison, Topeka, and Santa Fe Railroad between Marceline, Missouri and Argentine, Kansas. Brakemen exchanging highball signs. When two trains pass one another, the brakeman watch the other train for signs of hot boxes or other damage. If all is well, the highball sign is given. If not, other signals, to indicate the type of trouble, are used

On the Atchison, Topeka, and Santa Fe Railroad between Marceline, Miss...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Washington, D.C. The U.S. Weather Bureau station at the National Airport. High frequency radio receiver recording signals from small radio transmitter attached to radiosonde balloon aloft. The signals reveal temperature, humidity and pressure at various altitudes

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

Beaumont, Texas. Woman who operated block signals for a railroad reading in the signal tower

Beaumont, Texas. Woman who operated block signals for a railroad readi...

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

On board the fishing boat Alden, out of Gloucester, Massachusetts. During the chase of a mackerel school, the skipper signals for the rear dory to cut loose from the big boat. The big boat continues in a circle, towing the seining boat and net, which is dropped overboard as they go along. The dory, which is then in a stationary position, waits at the other end of the net. Here the seining boat and the dory are making the contact

On board the fishing boat Alden, out of Gloucester, Massachusetts. Dur...

Picryl description: Public domain image of a fishing boat, free to use, no copyright restrictions.

Washington, D.C. The U.S. Weather Bureau station at the National Airport. This high frequency radio transmitter is small, but very effective. It is attached to a large balloon and transmitts signals which reveal temperature, humidity and pressure as it ascends to various altitudes

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Public domain photograph of Washington DC, 1930s, free to use, no copyright restrictions image - Picryl description

Repairing signals at an Indiana Harbor Belt Line railroad yard

Repairing signals at an Indiana Harbor Belt Line railroad yard

Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description

Dahinda, Illinois. On the Atchison, Topeka and Santa Fe Railroad between Chillicothe, Illinois to Fort Madison, Iowa, a coupling pin jumps loose and the train breaks in two. The conductor, riding on top of the train, signals the engineer as they back up in order to couple the cars together again

Dahinda, Illinois. On the Atchison, Topeka and Santa Fe Railroad betwe...

Picryl description: Public domain image of an industrial building, warehouse, depot, train station, 19th-20th century, free to use, no copyright restrictions.

Beaumont, Texas. Lady who operates block signals for railroad crossing

Beaumont, Texas. Lady who operates block signals for railroad crossing

Public domain photograph of the United States in the 1930s, portraits, people, events, free to use, no copyright restrictions image - Picryl description

Washington, D.C. The U.S. Weather Bureau station at the National Airport. High frequency radio receiver recording signals from small radio transmitter attached to radios on a balloon aloft. The signals reveal temperature, humidity and pressure at various altitudes

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Annotation on negative or original negative jacket. This image in a jacket marked "Killed" Title and other information from caption sheet entry. Transfer; United States. Office of War Information. Overseas Pict... More

Dahinda, Illinois. On the Atchison, Topeka and Santa Fe Railroad between Chillicothe, Illinois to Fort Madison, Iowa, a coupling pin jumps loose and the train breaks in two. The conductor, riding on top of the train, signals the engineer as they back up in order to couple the cars together again

Dahinda, Illinois. On the Atchison, Topeka and Santa Fe Railroad betwe...

Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.

Beaumont, Texas. Lady who operated block signals for a railroad crossing

Beaumont, Texas. Lady who operated block signals for a railroad crossi...

Public domain photograph of the United States in the 1930s, portraits, people, events, free to use, no copyright restrictions image - Picryl description

Beaumont, Texas. Lady who operates block signals for a railroad crossing

Beaumont, Texas. Lady who operates block signals for a railroad crossi...

Public domain image of a train station in Boston, Massachusetts, free to use, no copyright restrictions - Picryl description

Freight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The train crew watch all towers for any signals or special instructions

Freight train operations on the Chicago and Northwestern Railroad betw...

Public domain image of a historic building, free to use, no copyright restrictions - Picryl description

Beaumont, Texas. Lady who operated block signals for a railroad crossing

Beaumont, Texas. Lady who operated block signals for a railroad crossi...

Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description

Washington, D.C. The U.S. Weather Bureau station at the National Airport. This high frequency radio transmitter is small, but very effective. It is attached to a large balloon and transmitts signals which reveal temperature, humidity and pressure

Washington, D.C. The U.S. Weather Bureau station at the National Airpo...

Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Pilot of NATS R5D Signals that He is about to Start Engines

Pilot of NATS R5D Signals that He is about to Start Engines

Original caption: N3-411. Publicity and Press Files Public domain photograph of a bomber aircraft, free to use, no copyright restrictions image - Picryl description

KENNEDY SPACE CENTER, FLA. -- At NASA's Kennedy Space Center, members of the STS-122 crew arrive for launch. From left are Mission Specialists Leopold Eyharts, Stanley Love, Hans Schlegel, Rex Walheim and Leland Melvin. They were greeted by Doug Lyons (left, yellow shirt), launch director for the mission, and Pete Nickolenko (right, green shirt), lead shuttle test director. Eyharts and Schlegel represent the European Space Agency. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett KSC-08pd0125

KENNEDY SPACE CENTER, FLA. -- At NASA's Kennedy Space Center, members...

KENNEDY SPACE CENTER, FLA. -- At NASA's Kennedy Space Center, members of the STS-122 crew arrive for launch. From left are Mission Specialists Leopold Eyharts, Stanley Love, Hans Schlegel, Rex Walheim and Lel... More

KENNEDY SPACE CENTER, FLA. -- This closeup shows the internal connector to which the replacement feed-through connector in the engine cutoff, or ECO, sensor system on space shuttle Atlantis' external tank will be installed. The feed-through connector passes the wires from the inside of the tank to the outside. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The pins in the replacement connector have been precisely soldered to create a connection that allows sensors inside the tank to send signals to the computers onboard Atlantis. The work is being done on Launch Pad 39A. Space shuttle Atlantis is now targeted for launch on Feb. 7. Photo credit: NASA/George Shelton KSC-08pd0038

KENNEDY SPACE CENTER, FLA. -- This closeup shows the internal connect...

KENNEDY SPACE CENTER, FLA. -- This closeup shows the internal connector to which the replacement feed-through connector in the engine cutoff, or ECO, sensor system on space shuttle Atlantis' external tank will... More

KENNEDY SPACE CENTER, FLA. -- STS-122 Commander Steve Frick (right) and Pilot Alan Poindexter arrive at NASA's Kennedy Space Center in a shuttle training aircraft jet for launch aboard space shuttle Atlantis on Feb. 7. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett KSC-08pd0121

KENNEDY SPACE CENTER, FLA. -- STS-122 Commander Steve Frick (right) a...

KENNEDY SPACE CENTER, FLA. -- STS-122 Commander Steve Frick (right) and Pilot Alan Poindexter arrive at NASA's Kennedy Space Center in a shuttle training aircraft jet for launch aboard space shuttle Atlantis o... More

KENNEDY SPACE CENTER, FLA. -- After arriving at NASA's Kennedy Space Center, STS-122 Commander Steve Frick is greeted by Doug Lyons, launch director for STS-122 mission. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett KSC-08pd0122

KENNEDY SPACE CENTER, FLA. -- After arriving at NASA's Kennedy Space ...

KENNEDY SPACE CENTER, FLA. -- After arriving at NASA's Kennedy Space Center, STS-122 Commander Steve Frick is greeted by Doug Lyons, launch director for STS-122 mission. The crew's arrival signals the imminent... More

CAPE CANAVERAL, Fla. - In Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians roll the test equipment away from an external tank door on space shuttle Atlantis following the successful completion of a push test. Two umbilical doors, located on the shuttle's aft fuselage, close after external tank separation following launch. The test confirms that the door's actuators are functioning properly and that signals sent from the actuators correctly indicate that the doors have closed, creating the necessary thermal barrier for reentry. Atlantis is next slated to deliver an Integrated Cargo Carrier and Russian-built Mini Research Module to the International Space Station on the STS-132 mission. The second in a series of new pressurized components for Russia, the module will be permanently attached to the Zarya module. Three spacewalks are planned to store spare components outside the station, including six spare batteries, a boom assembly for the Ku-band antenna and spares for the Canadian Dextre robotic arm extension. A radiator, airlock and European robotic arm for the Russian Multi-purpose Laboratory Module also are payloads on the flight. Launch is targeted for May 14, 2010. Photo credit: NASA/Troy Cryder KSC-2010-1076

CAPE CANAVERAL, Fla. - In Orbiter Processing Facility 1 at NASA's Kenn...

CAPE CANAVERAL, Fla. - In Orbiter Processing Facility 1 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians roll the test equipment away from an external tank door on space shuttle Atla... More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician gets ready to place the cover over the engine cutoff, or ECO, sensor system connector and wiring on space shuttle Atlantis' external tank. The feed-through connector passes the wires from the inside of the tank to the outside. Results of a tanking test on Dec. 18 pointed to an open circuit in the feed-through connector wiring, which is located at the base of the tank. The pins in the replacement connector were precisely soldered to create a connection that allows sensors inside the tank to send signals to the computers onboard Atlantis. The launch date for the shuttle's STS-122 mission has now been targeted for Feb. 7. Photo credit: NASA/Kim Shiflett KSC-08pd0071

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Sp...

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A at NASA's Kennedy Space Center, a technician gets ready to place the cover over the engine cutoff, or ECO, sensor system connector and wiring on space shuttle A... More

KENNEDY SPACE CENTER, FLA. - During suit check, STS-115 Mission Specialist Steven MacLean signals confidence about the launch on Space Shuttle Atlantis on Aug. 27. MacLean, who represents the Canadian Space Agency, will be making his second flight on a shuttle. Mission STS-115 is scheduled to lift off about 4:30 p.m. Aug. 27. The crew will deliver and install the P3/P4 segment to the port side of the integrated truss system on the International Space Station. The truss includes a new set of photovoltaic solar arrays. When unfurled to their full length of 240 feet, the arrays will provide additional power for the station in preparation for the delivery of international science modules over the next two years. The mission is expected to last 11 days and includes three scheduled spacewalks. Photo credit: NASA/Kim Shiflett KSC-06pd1924

KENNEDY SPACE CENTER, FLA. - During suit check, STS-115 Mission Speci...

KENNEDY SPACE CENTER, FLA. - During suit check, STS-115 Mission Specialist Steven MacLean signals confidence about the launch on Space Shuttle Atlantis on Aug. 27. MacLean, who represents the Canadian Space A... More

During suitup in the Operations and Checkout Building, STS-92 Mission Specialist Koichi Wakata of Japan signals thumbs up for a second launch attempt. During the 11-day mission to the International Space Station, four extravehicular activities (EVAs), or spacewalks, are planned for construction. The payload includes the Integrated Truss Structure Z-1 and the third Pressurized Mating Adapter. The Z-1 truss is the first of 10 that will become the backbone of the Space Station, eventually stretching the length of a football field. PMA-3 will provide a Shuttle docking port for solar array installation on the sixth Station flight and Lab installation on the seventh Station flight.; Launch is scheduled for 7:17 p.m. EDT. Landing is expected Oct. 22 at 2:10 p.m. EDT KSC-00pp1539

During suitup in the Operations and Checkout Building, STS-92 Mission ...

During suitup in the Operations and Checkout Building, STS-92 Mission Specialist Koichi Wakata of Japan signals thumbs up for a second launch attempt. During the 11-day mission to the International Space Statio... More

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Pilot Alan Poindexter, strapped in his seat in Atlantis' cockpit, signals that he is ready to proceed with the simulated launch countdown. The exercise is part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Atlantis' launch is targeted for Dec. 6. Photo credit: NASA/Kim Shiflett KSC-07pd3441

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Pilot Al...

KENNEDY SPACE CENTER, FLA. -- Space shuttle Atlantis STS-122 Pilot Alan Poindexter, strapped in his seat in Atlantis' cockpit, signals that he is ready to proceed with the simulated launch countdown. The exe... More

US Army soldiers give hand signals from M60 main battle tanks during a field training exercise. Two AH-1 Cobra helicopters are hovering overhead

US Army soldiers give hand signals from M60 main battle tanks during a...

The original finding aid described this photograph as: Country: Unknown Scene Camera Operator: Unknown Release Status: Released to Public Combined Military Service Digital Photographic Files

U.S. Army soldiers give hand signals from the turrets of their M-60 main battle tanks during a field training exercise. An AH-1 Cobra helicopter is hovering overhead

U.S. Army soldiers give hand signals from the turrets of their M-60 ma...

The original finding aid described this photograph as: Country: Unknown Scene Camera Operator: Unknown Release Status: Released to Public Combined Military Service Digital Photographic Files

US Army soldiers give hand signals from the turrets of their M60 main battle tanks at dusk during a field training exercise

US Army soldiers give hand signals from the turrets of their M60 main ...

The original finding aid described this photograph as: Country: Unknown Scene Camera Operator: Unknown Release Status: Released to Public Combined Military Service Digital Photographic Files

The bow catapult officer signals to the pilot of an A-7E Corsair II aircraft during flight operations aboard the aircraft carrier USS AMERICA (CV 66)

The bow catapult officer signals to the pilot of an A-7E Corsair II ai...

The original finding aid described this photograph as: Country: Unknown Scene Camera Operator: PH1 J.H. Kirchoff Release Status: Released to Public Combined Military Service Digital Photographic Files

A pararescueman of the 55th Aerospace Rescue and Recovery Squadron, Eglin AFB, Fla., signals for a litter to be dropped from a helicopter hovering nearby. The sea rescue exercise is being staged for a movie production

A pararescueman of the 55th Aerospace Rescue and Recovery Squadron, Eg...

The original finding aid described this photograph as: Country: Gulf Of Mexico Scene Camera Operator: TECH. SGT. Robert Leach Release Status: Released to Public Combined Military Service Digital Photographic Files

A Light Helicopter Anti-submarine Squadron 36 (HSL-36) SH-2F Seasprite light airborne multi-purpose system (LAMPS) helicopter takes off from the flight deck of the frigate USS TRIPPE (FF-1075) as a crewman signals during exercise Unitas XX

A Light Helicopter Anti-submarine Squadron 36 (HSL-36) SH-2F Seasprite...

The original finding aid described this photograph as: Subject Operation/Series: UNITAS XX Base: Rio De Janeiro Country: Brazil (BRA) Scene Camera Operator: PH2 K. Brewer Release Status: Released to Public... More

A Light Helicopter Anti-submarine Squadron 36 (HSL-36) SH-2F Seasprite light airborne multi-purpose system (LAMPS) helicopter on the flight deck of the frigate USS TRIPPE (FF-1075) as a crewman signals it for takeoff during exercise Unitas XX

A Light Helicopter Anti-submarine Squadron 36 (HSL-36) SH-2F Seasprite...

The original finding aid described this photograph as: Subject Operation/Series: UNITAS XX Base: Rio De Janeiro Country: Brazil (BRA) Scene Camera Operator: PH2 K. Brewer Release Status: Released to Public... More

Prior to the arrival of a full F-16 Fighting Falcon aircraft, an F-16 nose section is mounted on a testing tower at the Rome Air Development Center Newport Site, Tanner Hill. At this facility portions of an aircraft can be tested to determine what effect they have on transmitting and receiving electromagnetic signals

Prior to the arrival of a full F-16 Fighting Falcon aircraft, an F-16 ...

The original finding aid described this photograph as: Base: Griffiss Air Force Base State: New York (NY) Country: United States Of America (USA) Scene Camera Operator: Unknown Release Status: Released to ... More

A view of a special F-16 Fighting Falcon aircraft nose section mock-up assembled at the Rome Air Development Center Newport Site. The F-16 nose section is being used to study the effect of that portion of the fuselage on the effective transmission and reception of electromagnetic signals

A view of a special F-16 Fighting Falcon aircraft nose section mock-up...

The original finding aid described this photograph as: Base: Griffiss Air Force Base State: New York (NY) Country: United States Of America (USA) Scene Camera Operator: Unknown Release Status: Released to ... More

Prior to the arrival of a full F-16 Fighting Falcon aircraft, an F-16 nose section is mounted on a testing tower at the Rome Air Development Center Newport Site, Tanner Hill. At this facility portions of an aircraft can be tested to determine what effect they have on transmitting and receiving electromagnetic signals

Prior to the arrival of a full F-16 Fighting Falcon aircraft, an F-16 ...

The original finding aid described this photograph as: Base: Griffiss Air Force Base State: New York (NY) Country: United States Of America (USA) Scene Camera Operator: Unknown Release Status: Released to ... More

SGT. W. Bent signals to the men of the demonstration platoon at the Officer Candidate School, Marine Corps Development and Education Command. He is armed with an M-16A1 rifle

SGT. W. Bent signals to the men of the demonstration platoon at the Of...

The original finding aid described this photograph as: Base: Marine Corps Base, Quantico State: Virginia (VA) Country: United States Of America (USA) Scene Camera Operator: SGT. G.T. Shingu Release Status:... More

A ground crewman signals to a taxing C-141B Starlifter aircraft returning from Exercise VOLANT RODEO '80. Aboard the aircraft a crew member waves a flag from the forward escape hatch

A ground crewman signals to a taxing C-141B Starlifter aircraft return...

The original finding aid described this photograph as: Base: Norton Air Force Base State: California (CA) Country: United States Of America (USA) Scene Camera Operator: SSGT Robert C. Marshall Release Stat... More

LT. Mary Jorgenson, a pilot with Fighter Squadron 126 (VF-126, signals from the cockpit of a TA-4 Skyhawk aircraft that she is ready to begin her flight. LT. Jorgenson is taking a midshipman on a demonstration flight during a one-week aviation training program for students enrolled in the Naval Reserve Officers Training Corps (NROTC)

LT. Mary Jorgenson, a pilot with Fighter Squadron 126 (VF-126, signals...

The original finding aid described this photograph as: Base: Naval Air Station, Miramar State: California (CA) Country: United States Of America (USA) Scene Camera Operator: PH1 Terry C. Mitchell Release S... More

A crewman from Helicopter Light Antisubmarine Squadon 31 (HSL-31) signals to the pilot of an HH-2D Seasprite helicopter approaching the deck of the surveying ship USNS CHAUVENET (T-AGS 29)

A crewman from Helicopter Light Antisubmarine Squadon 31 (HSL-31) sign...

The original finding aid described this photograph as: Base: Usns Chauvenet (T-AGS 29) Country: Indonesia (IDN) Scene Camera Operator: J01 Lewis Release Status: Released to Public Combined Military Service ... More

A view of the NAVSTAR global positioning satellite system, which broadcasts signals to land, sea and aerospace forces

A view of the NAVSTAR global positioning satellite system, which broad...

The original finding aid described this photograph as: Country: Unknown Scene Camera Operator: Afsc Release Status: Released to Public Combined Military Service Digital Photographic Files

A crewman signals for a boat to be lowered from the surveying ship USNS CHAUVENET (T-AGS 29)

A crewman signals for a boat to be lowered from the surveying ship USN...

The original finding aid described this photograph as: Base: Makassar Strait Country: Indonesia (IDN) Scene Camera Operator: J01 Lewis Release Status: Released to Public Combined Military Service Digital Ph... More

Jack Shumsky, electrical engineer, operates the computer control panel adjusting the video gain and levels of the forward looking infrared radar (FLIR) camera used to record "cold and warm" calibration signals. The engineer is working in the airborne infrared flying laboratory of the Air Force Geophysics Laboratory (AFGL)

Jack Shumsky, electrical engineer, operates the computer control panel...

The original finding aid described this photograph as: Base: Hanscom Air Force Base State: Massachusetts (MA) Country: United States Of America (USA) Scene Camera Operator: SSGT William W. Magel Release St... More

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