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Caption: "Liberty Cap Rock - Mammoth Hot Springs," c. 1923. Liberty Cap Rock, a 40-foot tall dormant hot spring cone, is located in the Mammoth Hot Springs area of Yellowstone National Park.
Date: 1923
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Correspondence from Charles M. Wollenberg (by Bertha S. Underhill) to Beulah L. Lewis regarding discussion of sixty-day limit on assistance
Date: May 20, 1946