Statistics for occurrence #1 of “Doctors Hamilton” in chapter 9, page 292 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.:

...ch a project after the war was ended, if they survived. At the national encampment in St. Louis, in 1887, it was stated by Fred. J. Dean, of Fort Scott, Arkansas, that in February, 1866, he, with Doctors Hamilton and George H. Allen, assisted Doctor Stephenson in compiling ritualistic work, constitution, and by-laws at Springfield, Illinois, and these four assumed the obligations of the Grand Army of the Repu...
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