Statistics for occurrence #1 of “Brigadier-Generals S. P. Heintzelman” in chapter 7, page 194 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 10: The Armies and the Leaders.:

... Brigadier-Generals S. P. Heintzelman
On the reorganization of the Army of the Potomac in March, 1862, a body of troops, chiefly from Heintzelman's, Porter's and ...
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