Tripod signal erected by Capts. Dorr and Donn of U.S. Coast Survey at
Pulpit Rock on Lookout Mountain. Battle of Chattanooga.
Are John Donn and Frederick Dorr the two men in this image?
Image ID: cgs01738, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Tennessee, Chattanooga area
Photo Date: 1863?-1864?
Credit: Library of Congress American Memory Collection
• High Resolution Photo Available
of the U.S. Department of Commerce, National Oceanic & Atmospheric
NOAA Central Library
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April 30, 2013