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.
Francis Trevelyan Miller, Ed.

In the remaining seventy feet an average of one hundred and seventy men slept in tiers of bunks. Camp Douglas was located on land belonging to the Stephen A. Douglas estate, and was bounded by Cottage Grove Avenue on the east, Forest Avenue on the west, Thirty-first Street on the north, and Thirty-third Street on the south. In 1911 the Cottage Grove Avenue electric cars were running past the old front, and the Thirty-first Street cross-town cars past the north boundary; the ‘Camp’ was a residence district.