Map of military road from Fort Walla Walla on the Columbia to Fort Benton on the Missouri. Relief shown by hachures. "Senate Ex. Doc. No. 43-37th Congr. 3d. Sess." Shows roads, camps, trails, rapids and locations of battles. "Theodore Kolecki, Engel, Gustavus Sohon, de Lacy, Capt. Leo White and Howard have contributed the material for this map Columbia navigable by Steamers to Priest's Rapids. Snake River to Lewiston, possibly higher. Wallula and Lewiston are the present points of debarkation."... , Idaho Montana Oregon Washington

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