Early abridged edition of Fremont’s account of his two groundbreaking expeditions, the only version to contain the rare map by Rufus Sage, “Map of Oregon, California, New Mexico, N.W. Texas & the Proposed Territory of Ne-Bras-Ka (Nebraska) by Rufus B. Sage, 1846, F. Michelin’s Lith…NY”, 45x59.5 cm. (17½x23¼"). The map had been issued earlier in Sage’s Scenes in the Rocky Mountains (1846) and evidently remainder issues of the map were used in the Fremont. Wheat notes that the map was primarily based on Fremont’s 1845 map, and adds that “the map was one of the earliest to depict the finally-determined Oregon boundary.” The map is also of significance in that it was useful to the many immigrants who crossed the plains from 1847 through the gold rush. Wheat 527; Wagner-Camp 115:9; Howes F370; Streeter 3132; Graff 1433.