MIN-1936-01 Annotated Catalogue of Unpublished Engineering and Geological Reports on Mineral Resources of Colorado MIN-1936-01 Annotated Catalogue of Unpublished Engineering and Geological Reports on Mineral Resources of Colorado
B-30 Geology and Ore Deposits of the Red Cliff District B-30 Geology and Ore Deposits of the Red Cliff District, Colorado
B-13 Geology and Ore Deposits of the Platoro-Summitville Mining District B-13 Geology and Ore Deposits of the Platoro-Summitville Mining District
B-10 Geology and Ore Deposits of the Gold Brick District B-10 Geology and Ore Deposits of the Gold Brick District, Colorado
B-09 Geology of Ore Deposits of the Bonanza District B-09 Geology of Ore Deposits of the Bonanza District, Saguache County, Colorado