Map of the United States, Territory of Oregon, west of the Rocky Mountains, exhibiting the various trading depots or forts occupied by the British Hudson Bay Company, connected with the western and northwestern fur trade /
Scale ca. 1:1,000,000. Relief shown by hachures. Label pasted on, signed in black ink: Wash: Hood Capt. Topl. Engrs. "S. Doc. no. 470, 25 Con. 2 s." Includes notes. Another issue includes the lines denoting coastal and interior waters not shown on this map (G4240 1838 .H61) DLC