Statistics for occurrence #1 of “Alton, Illinois” in chapter 1.6, page 144 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.:

...he had prepared. As he could swim but imperfectly, he was unwilling to venture into the bay without some support. Desperate prisoners constantly attempted to escape from the old penitentiary at Alton, Illinois , and were sometimes successful. Once they set the prison on fire, and in the confusion several got over the wall. The most remarkable escape from this prison, however, was that of Colonel Ebeneze...
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