From the field notes and journals of Capt. J.C. Fremont and from sketches and field notes made on the ground by his assistant Charles Preuss. Each is about 26 x 16". Together the seven cover the region "commencing at the Mouth of the Kansas in the Missouri River, and Ending at the Mouth of the Wallah Wallah in the Columbia." That is to say the Oregon Trail Route. Typography is in more detail than in Fremont's parent map. Each sheet is filled with descriptive comments from Fremont's narrative, thus providing a most authentic guide for emigrants at the time. A matching and complete set of seven scarce maps.

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Condition: A

Sheet VII with binding roughness at bottom margin, still all very good.