Hayden,,, Ferdinand V. Geologist inspects Cent. City & Black Hawk, Colorado.' 1868. Hall. History . Colo. v.1 p.454 U. S. surveyor reports enough water to irrigate without reservoirs. Steinel.Hist.Agric. Colo. x.195 Mentioned' Georgetown, Colo. R. M. News. July 21, 1869 p.4c.2 Employe, U. S. Geological survey, Colo. R. M. News. Apr. 25, 1870 p.2c.1 Mentioned, Georgetown, Colo. R. M. News. Aug. 3, 1870 p.4c.5
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