''Stansbury's Expedition,'' by Howard Stansbury, 1849-1850, two large folding maps of Utah Territory bound in one volume, including: ''Map of The Great Salt Lake and Adjacent Country in the Territory of Utah,'' Col. J.J. Abert and Capt. Howard Stansbury, 1849-1850, New York: Ackerman Lith; and ''Map of a Reconnaissance between Fort Leavenworth on the Missouri River and the Great Salt lake in the Territory of Utah,'' Col. J.J. Abert and Capt. Howard Stansbury, 1849-1850, New York: Ackerman Lith. Some tanning and foxing, small tear to each map. Book 9-1/4''l, 6''w.