2 volumes (4 parts) in 3. xvi, 258, viii, 174; [vi], 270, 78; 62, 32, [2], 35, 85, ii pp. Illustrated with: large folding map; 12 color lithographs of Indians or views; 33 plates with 66 engraved outline sketches; 1 folding profile; 1 folding chart; large folding hand-colored geologic map; 21 steel-engraved paleontological plates; 61 lithographed botanical plates; 75 steel-engraved cactaceae specimen plates & 1 view of cacti; 27 steel-engraved plates of mammals; 25 hand-colored steel-engraved ornithological plates; 41 steel-engraved plates of reptiles; 41 steel-engraved ichthyological plates; and numerous wood-engraved illustrations in text. (4to), rebound in brown buckram. House of Representatives Issue. 34th Congress, 1st Session. Ex. Doc. No. 135.

Report on government explorations in the Southwest, noteworthy for the striking illustrations as well as the text, and with an important map. Wagner-Camp notes that "Emory's writing style and system of organization lacks the quality of John C. Fremont, but the scientific content of the Report is indeed comparable to Fremont's earlier Narrative, according to William H. Goetzmann. Although Emory had been a key member of the Commission ever since its beginning, his narrative of his own adventures is sketchy and inadequate, and reflects in it some of his animosity toward John Bartlett. Emory's own contribution to the Report is cartographic; as the Commission's chief astronomer, he had made most of the several thousand observations which were incorporated into the maps...." Goetzmann pp. 198-99; Howes E146; Wagner-Camp 291.