FRMONT, John Charles (1813-1890). Report of the Exploring Expedition to the Rocky Mountains...and to Oregon and North California. Washington: Gales and Seaton, 1845. 8vo (226 x 143 mm). 2 engraved folding maps, 2 engraved maps, 22 engraved plates in text; large folding map in rear pocket (with short tears to folds). (Spotting, dampstained). Original blind-stamped brown cloth (some wear, joints splitting). FIRST EDITION, Senate issue, of Fremont's first and second expeditions. Howes F370; Sabin 25845.