[Derby, George H.].
Report of the Secretary of War, in compliance with a resolution of the Senate, a reconnoissance [sic] of the Gulf of California and the Colorado River by Lietenant Derby. June 19, 1852. Senate, 32d Congress, 1st Session, Ex. Doc. No. 81Washington DC. 28p, illustrations. 22cm. With the fold-out map, "Reconnaissance of the Colorado River" attached to the last page. Removed. Slightly toned, map slightly foxed, small portion of one corner missing with no impact on content. In very good condition. [Hasse p. 27].