01062cam a22002771 4500 gs 09000056 DLC 20260227111308.0 780524s1908 dcuabef f001 0 eng gs 09000056 (OCoLC)3925174 DLC USlW OCoLC DLC premarc TN24.C6 S8 no. 63 557.3 Spurr, Josiah Edward, 1870-1950. Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado, by Josiah E. Spurr and George H. Garrey: with general geology, by Sydney H. Ball. Washington, Govt. Print. Off., 1908. 422 p. illus., LXXXVII pl. (part fold., incl. maps, plans) diagrs. 29 x 23 cm. Geological Survey (U.S.). Professional paper 63 Four folded plates, including 2 maps, in pocket. Mines and mineral resources Colorado. Geology Colorado. Garrey, George H., 1886- Ball, Sydney Hobart, 1877-1949. 24810 24810