William Culp Darrah Papers

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Correspondence, research notes, and photographs relating to "Powell of the Colorado" (1951) and "Utah Historical Quarterly," Vol. 15-17.

Historical perspective of early twentieth century Carboniferous paleobotany in North America

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Geological Survey Professional Paper

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Powell of the Colorado

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In May 1869, Major John Wesley Powell, geologist, enthnologist, and geographer set out from Green River, Wyoming, with nine men and four boats to explore the fo

Paper Promises

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Scholarship on photography’s earliest years has tended to focus on daguerreotypes on metal or on the European development of paper photographs made from glass