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Mouth of the Columbia River, Oregon Territory, 1841

A map of the mouth of the Columbia River, Oregon Territory as surveyed by the United States Exploring Expedition in 1841 under commander Charles Wilkes. Relief shown by hachures. Depths shown by soundings. Inset details soundings of the Bar of Columbia River. Item has also been identified as bb017536.

Wilkes, Charles, 1798-1877

Mouth of Columbia River, 1851

A nautical map of the “Mouth of Columbia River / from a preliminary survey under the direction of A.D. Bache, Superintendent of the Survey of the Coast of the United States by the hydrographic party under the command of W.P. McArthur Lt. U.S.N. and Asst. U.S. Coast Survey, W.A. Bartlett Lt. U.S.N. Assistant ; reduction for engraving by A. Boschke, draughtsman ; engraved by W. Smith and E.F. Woodward.” Includes inset: View of the Entrance of Columbia River, Cape Hancock or Disappointment E. by N. (compass) 12 statute miles. Relief shown by hachures. Depths shown by soundings and isolines. Includes text on "sailing directions" and "tides." Handwritten note of graphic scale by George Davidson is erroneous.Scale 1:40,000. Item has also been identified as bb017545.

United States Coast Survey

Chart of the Columbia River for 90 miles from its mouth, 1838

A navigational map, “Chart of the Columbia River for 90 miles from its mouth [cartographic material] / drawn from several surveys in the possession of W.A. Slacum ; by M.C. Ewing.” Relief shown by hachures. Depths shown by soundings. Oriented with north to the left. Profiles: Cape Disappointment N.N.E. by compass distance 10 miles -- Cape Disappointment N.N.E. 6 miles. "S. Doc. No. 470. 25 Con. 2d S." Series: Senate document (United States. Congress. Senate) ; 25th Congress, 2d session, no. 470. Imaged map dissected and mounted on cloth backing. Item has also been identified as bb017535.

Ewing, Maskell C.