Relief shown in hachures. "Level of the Mississippi River May 7th, 1833, nearly low water." From map in U.S. House Doc. no. 83, 23rd Congress, 2nd Session, 1834-1835, vol. 3. LC Trails, 243 The route is shown b More
Relief shown by hachures. "S. Doc. no. 470, 25 Con. 2 s." Includes notes. Available also through the Library of Congress Web site as a raster image. LC copy annotated in pencil: scale incorrect. Another issue d More
Relief shown by hachures. Includes note. Available also through the Library of Congress Web site as a raster image. LC copy signed on verso: Oregon Territory 1838, Millard Fillmore. Sectioned and folded into 8 More
Scale ca. 1:1,000,000. Relief shown by hachures. Label pasted on, signed in black ink: Wash: Hood Capt. Topl. Engrs. LC copy annotated in pencil with extensive notes and revisions. "S. Doc. no. 470, 25 Con. 2 s More