Statistics for occurrence #1 of “Colonel Haupt” in chapter 14, page 286 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

... it had been composed of details of soldiers. It was now made up of a permanent personnel, assisted by details when necessary. Under date of June 11, 1862, a set of regulations was promulgated by Colonel Haupt for the guidance of the corps, and on June 20th, Haupt, believing that he had accomplished the purpose for which he was brought to Washington by the Secretary of War, sent in a letter of resignation,...
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