Statistics for occurrence #1 of “Colonel Charles W. Hill” in chapter 1.3 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 7: Prisons and Hospitals.:

...s W. S. Pierson, a business man of Sandusky, entirely without military training, who was commissioned major to command a battalion of prison guards raised for the purpose. He was later succeeded by Colonel Charles W. Hill , who commanded to the end. The number of Confederate prisoners soon became so large that other prisons were necessary, and during 1862 it was determined to restrict this prison to officers. The...
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