00802cam a22002411 4500 gs 26000129 DLC 20260227111330.0 760209s1926 dcu f000 0 eng gs 26000129 (OCoLC)1979225 DLC IDeKN OCoLC DLC premarc QE75 .B9 no. 779 Loughlin, G. F. (Gerald Francis), 1880-1946. Guides to ore in the Leadville district, Colorado, by G. F. Loughlin. Washington, Govt. print. off., 1926. III, 37 p. illus., VII fold. pl. (incl. map in pocket). U.S. Geological survey. Bulletin 779 At head of title: Department of the interior. Ores Colorado Leadville. Ore deposits. 26447 26447