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.
A colored map of Oregon, Washington, and parts of Idaho produced by the Oregon Pacific Railroad Company circa 1885. The map shows railroad lines under construction and proposed routes and connections, steamship lines along rivers and other navigable waterways, built and projected connections, and boundaries of land grants held by the Oregon Pacific Railroad Company. Scale [ca. 1:1,800,000]. Relief shown by form lines. Original map mounted on cloth backing. Item has also been identified as bb0175546.
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.
A reproduction of a hand-drawn sketch of the Columbia River by William Clark. The map also indicates camping places on the return journey in April, 1806. Originally issued in volume titled: Atlas accompanying the original journal of the Lewis and Clark expedition, 1804-1806, edited by Reuben Gold Thwaites (New York : Dodd, Mead & Company, 1905). Map 32, pt. 2. Item has also been identified as bb017544.