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Topographical map of the road from Missouri to Oregon [map] : commencing at the mouth of the Kansas in the Missouri river and ending at the mouth of the Wallah-Wallah in the Columbia : in VII sections / from the field notes and journal of Capt. J.C. Fremont and from sketches and notes made on the ground by his assistant Charles Preuss ; compiled by Charles Preuss 1846 by order of the Senate of the United States. |
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