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Timothy H. O'Sullivan
Water rhyolites, near Logan Springs, Nevada
Library of Congress, Prints and Photographs Division
Reproduction Number: Reproduction Number: LC-DIG-ppmsca-10022
Originally published: Photographs showing landscapes, geological, and other features of portions of the western territory of the United States, obtained in connection with geographical and geological explorations and surveys west of the 100th meridian, seasons of 1871, 1872, and 1873. [Washington, D.C.] : War Dept., Corps of Engineers, U.S. Army, 
Published in: Wheeler's photographic survey of the American West, 1871-1873 by George M. Wheeler ; with 50 landscape photographs by Timothy O'Sullivan and William Bell. New York : Dover Publications, Inc., 1983, Plate 13.