00940cam a22002771 4500 gs 17000294 DLC 20260227111321.0 780120s1917 dcuabef f000 0 eng c gs 17000294 (OCoLC)3572343 U.S. Geol. survey UU DLC premarc QE75 .P9 no. 97 I19.16:97 Umpleby, Joseph Bertram, 1883-1967. Geology and ore deposits of the Mackay region, Idaho, by Joseph B. Umpleby. Washington, Govt. Print Off., 1917. 129 p. illus., XXI pl. (part fold., part col., incl. maps. plan) diagrs. 30cm. United States. Geological survey. Professional paper 97 At head of title: Department of the Interior. Three maps in pocket. Contains references. Geology Idaho. Ore deposits Idaho. 25769 25769