Timothy H. O'Sullivan 1863, July Interior of Breastworks on Round Top, Gettysburg [Gardner's Photographic Sketch Book of the War. Incidents of the War, pl. 38]
"Negative by T.H. O'Sullivan. July, 1863. Entered according to act of Congress, in the year 1865, by A. Gardner, in the Clerk's Office of the District Court of the District of Columbia. Incidents of the War. Interior of Breastworks on Round Top, Gettysburg. Published by Philp & Solomon, Washington. Positive by A. Gardner, 511 7th Street, Washington" printed in the margin recto.
