O'sullivan, Timothy H.

General Isaac I. Stevens' brigade - 15th (i. e. 50th) Penn. at an old colonial mansion near Hilton Head, S.C.

Fleet of Fort Fisher expedition in Hampton Roads, December 1864, L.7432, S.836

15-inch (i.e. 13-inch) mortar, "Dictator" in the works in front of Petersburg, Va. View from the north, September 1, 1864

Part of Federal Line of Works showing bombproof tents occupied by U.S. Colored Troops in front of Petersburg, Va., Aug. 7, 1864

Confederate soldiers who had evidently been shelled by our batteries on Round Top, at the Battle of Gettysburg