Quartz mill at Virginia City, Nevada, in the Comstock mining district. Photograph by T.H. O’Sullivan was taken during the U.S. Geographical Exploration of the Fortieth Parallel, which investigated the Virginia City area during the winter of 1867-68. From USGS photographic library collection.
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Quartz mill at Virginia City, Nevada
Quartz mill at Virginia City, Nevada, in the Comstock mining district. Photograph by T.H. O’Sullivan was taken during the U.S. Geographical Exploration of the Fortieth Parallel, which investigated the Virginia City area during the winter of 1867-68. From USGS photographic library collection.
William Bramwell Powell and Major John Wesley Powell
Handwritten information on back of photograph, William Branwell (Bram) Powell (Bram) and Major J.W. (Wes) Powell. The two Powell brothers. Wheaton, Illinois. 1865.
Handwritten information on back of photograph, William Branwell (Bram) Powell (Bram) and Major J.W. (Wes) Powell. The two Powell brothers. Wheaton, Illinois. 1865.
Undated portrait of Jim Bridger (1804-1881)
Undated portrait of Jim Bridger (1804-1881). Published in Gaston's Portland, Oregon: Its History and Builders, volume 1 (1911), image in the public domain.
Undated portrait of Jim Bridger (1804-1881). Published in Gaston's Portland, Oregon: Its History and Builders, volume 1 (1911), image in the public domain.
William Clark's 1814 map, John Colter route through Yellowstone
William Clark's 1814 map, indicating the route of John Colter during the winter of 1807-1808. (Library of Congress, Geography and Map Division, Washington, D.C.)
William Clark's 1814 map, indicating the route of John Colter during the winter of 1807-1808. (Library of Congress, Geography and Map Division, Washington, D.C.)