Category:US National Archives series: Photographs taken by John K. Hillers during the Powell Survey and other Geological Surveys, compiled ca. 1879 - ca. 1900

Media in category "US National Archives series: Photographs taken by John K. Hillers during the Powell Survey and other Geological Surveys, compiled ca. 1879 - ca. 1900"

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Last modified on 26 August 2011, at 09:58