Union veterans of trench and field before Petersburg Dec. 1864

Title from caption in Miller, Francis Trevelyn, ed., The Photographic History of the Civil War in Ten Volumes, Vol. 3, The Decisive Battles. New York: Thomas Yoseloff, Inc., 1957, p. 272-273.
Corrected title and photographer from Frassanito, William A., Grant and Lee: The Virginia Campaigns, 1864-65, New York: Charles Scribner's Sons, 1983, p. 422. And, Brian Pohanka. "The Famous 'Petersburg' Photo," in Military Images Magazine, Jan.-Feb., 1984. With additional research by Barry McGhan, 2011.
See photograph without text in LOT 4189, no. 27.