lower left: Drawn by Winslow Homer.; across bottom: "I CANNOT! IT WOULD BE A SIN! A FEARFUL SIN!"-Page 354.
- 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.
- Gelman 1969, no.181.
- Kelsey 1977, no.167.