1900. C.E. Hagar Printing Company. Gold mines and mining--Colorado, Central--Maps.
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1900. Blatchley, W. S. (Willis Stanley), 1859-1940. Shows good, fair, and light oil territory, gas wells, dry and salt water territory, undrilled area, and pumping stations. Detached from: 25th Annua... Indiana Department of Geology and Natural Resources and William B. Burford.