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[Letter] 1902 February 11, Denver, Colo. [to] Messrs. Shortall & Murison, Chicago, Ill.
Contributor:United States. Bureau of Mines
Report on the Old Kentucky Group, Gilpin County, Colorado
Contributor:Beeler, Henry C.
Report on the Stewart Mine, Hawkeye Mining District, Gilpin County, Colorado
Contributor:Watson, Robert J., 1920-
Report made on the Stewart Lode mining claim with a copy of a prospectus issued before 1894 : Gilpin County, Colorado
Contributor:Lindemann, E. C.
Report of properties of the North American Mining Co., situated in Clear Creek, Gilpin, Boulder & San Juan Counties, Colorado
Contributor:Sanderson, H. S.
Covers the following mining districts in Colorado: Idaho Mining District, Jackson Mining District, Payne's Bar Mining District, Spanish Bar Mining District, Virginia Mining District, Yankee Hill Mining District, Russell ...
Report on the Lotus group of mines
Contributor:Jenners, Walter B.
Statement concerning property of the Argosy Gold Mining & Milling Co., Gilpin County, 1933
Contributor:Deems, C. W.
Report on the properties of the Golden Sun Tunnel & Mining Company
Contributor:Caldon, J. D.
Interview with Mr. H.C. Eastman on the Gregory-O'Neil Group
Contributor:Horn, Clifford R.; Eastman, H. C.