Merkatorskai︠a︡ karta Proliva Kuprei︠a︡nova : nakhodi︠a︡shchagosi︠a︡ mezhdu ostrovami Kadʹi︠a︡kom i Afognakom /
Summary
Depths shown by soundings.
Ms. in black and red inks with blue wash on tracing linen.
Traced names in Russian. Names added in red ink in English.
Handwritten in ink at bottom: March 1891. Received this from Lieut. Comd. H.E. Nichols. It is a tracing of a map loaned to a Captain trading [at?] Kodiak, on which his remarks & names have been put in red ink. [Signed] George Davidson.
Traced probably from a plate in M.D. Tebenkov's atlas: Atlas si︠e︡verozapadnykh beregov Ameriki. St. Petersburg, 1852.
Stained, foxed, and fold-lined.
Accompanied by letters describing provenance. [5] leaves ; 27 x 21 cm.
Available also through the Library of Congress Web site as a raster image.
Includes notes.
Vault
The word portolan comes from the Italian adjective portolano, meaning "related to ports or harbors", or "a collection of sailing directions". Portolan charts are maps based on compass directions and estimated distances observed by the pilots at sea. They were first made in the 13th century in Italy, and later in Spain and Portugal where they considered to be state secrets. The English and Dutch found the description of Atlantic and Indian coastlines extremely valuable for their raiding, and later trading, ships. The oldest survived portolan is the Carta Pisana, dating from approximately 1296 and the oldest preserved Majorcan Portolan chart is the one made by Angelino Dulcert who produced a portolan in 1339.
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