lower left in plate: H; across bottom: LIEUT. SLEMMER, U.S.A., COMMANDING FORT PICKENS.-[From a Daguerreotype.-[See Page 123.]
- Foster, Allen Evarts. "A check list of illustrations by Winslow Homer in 'Harper's Weekly' and other periodicals." Bulletin of the New York Public Library 40 (1936): 842-852. Separately published New York: New York Public Library, 1936.