Public domain
View of bombproof tents occupied by U.S. colored troops in front of Petersburg, Va., August 7, 1864
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineView of bombproof tents occupied by U.S. colored troops in front of Petersburg, Va., August 7, 1864. 1864-01-01. O'Sullivan, Timothy H.. Civil War Glass Negatives, Library of Congress. Public domain.