creatorOf |
Bird, Allan G. [Gold King, San Juan County, Colorado : part 1].
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the C.O.D. Mine located in the Cripple Creek District, Colorado / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the properties of the Lady Eleanora Consolidated Gold Mines Company : La Plata, Colorado / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the Durango Girl mine of the Durango Mining and Milling Company contained in a prospectus of the company, La Plata County / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the Aspen-Riverside mining group, Gunnison County, Colorado / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the Morning Star group of claims in the Alma mining district, Park County, Colorado / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Étienne Alphonse. Étude de quelques roches éruptives de la Basse-Californie / par Étienne Ritter.
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University of California, Los Angeles |
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creatorOf |
Ritter, Etienne Alphonse. Map of the Boulder County or Fairview Mine, S.10, T.1S., R.73W. / to accompany the report of Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. Report on the Red Cliff Consolidated Mines Co. / Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the Rito Seco mining property located in Costilla County, Colorado : preceded by copies of all available reports and data concerning the property (see index) / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the properties of the American Fluorspar Corporation located in Chaffee County, Colorado / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne A. Report on the Richmond Mine, located in Boulder County, Colorado 1940 Sept. 17.
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Boulder Public Library |
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creatorOf |
Ritter, Etienne A. (Etienne Alphonse). Report on the Lady Eleanora Consolidated Gold Mine Company, La Plata, Colorado / by Etienne A. Ritter.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Ritter, Etienne Alphonse. Map of the properties of the Unity Gold Corporation : located in the Cripple [Creek] District in Teller County, Colorado / to accompany the report on the properties of the Unity Gold Corp. by Etienne A. Ritter, Nov. 1932.
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
McClain, H. G. [Morning Star and Cresskill groups, Park County, Colorado].
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Prommel, H. W. C. [Tungsten minerals in parts of Tarryall Springs mining district, Park County, Colorado].
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Colorado School of Mines, Arthur Lakes Library |
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creatorOf |
Marks, John H. [Gold King, San Juan County, Colorado : part 2].
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Colorado School of Mines, Arthur Lakes Library |
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