Geologic History of the Yosemite Valley : Professional Paper 160
Washington, DC: US Department of the Interior, 1930. Paperback. An exhaustive, mid- 20th century study of the amazing Yosemite Valley in California. Side stapled paper wraps, 4to (11.5 inches tall), pp. vi, 137, [138 - blank], illustrated throughout with photo reproductions, charts and maps (many being fold-outs) three folded maps..... More