Picryl description: Public domain historical document page scan, free to use, no copyright restrictions image.
Photographer: Union Switch and Signal Co. Airplanes - Engines Public domain photograph of industrial workers, factory building, work, assembly line, free to use, no copyright restrictions image - Picryl description
Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a locomotive, train, railroad, railway, free to use, no copyright restrictions.
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Public domain photograph - 1930s California, United States, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a historical building, landmark architecture, world heritage, free to use, no copyright restrictions.
Picryl description: Public domain image of an industrial building, warehouse, depot, train station, 19th-20th century, free to use, no copyright restrictions.
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Public domain photograph of New York City, free to use, no copyright restrictions image - Picryl description
Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description
Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description
Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Picryl description: Public domain image of a factory worker, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions. show less
Public domain photograph of a steam locomotive, train car, railroad, railway, 19th-20th century, free to use, no copyright restrictions image - Picryl description
Public domain photograph of 3d object museum collection, metal, no copyright restrictions image - Picryl description
Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description
Public domain photograph of 3d object museum collection, metal, no copyright restrictions image - Picryl description
Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description
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.