00926cam a22002531 4500 gs 18000076 DLC 20260227111322.0 760409s1916 xx 000 0 eng gs 18000076 (OCoLC)2104932 DLC TxEU DLC premarc TN24.C6 C8 no. 10 Crawford, R. D. (Ralph Dixon), 1873- Geology and ore deposits of the Gold brick district, Colorado, by R. D. Crawford and P. G. Worcester. Denver, Colo., Eames bros., state printers, 1916. 116 p. illus., IX pl. (part fold., incl. maps) plans, diagrs. 24 cm. Colorado Geological Survey. Bulletin, 10 Maps and 1 plan in pocket. Geology Colorado. Mines and mineral resources Colorado. Worcester, Philip G. (Philip George), 1884- joint author. 25820 25820