~ Boyd, N. E., editor. *P.52.110 : Plain, sober talk to the studious and thoughtful, about our sexual nature. Published by the Moral Education Society of Washing- ton, D.C. Washington. Polkinghorn. 1875. 11 pp. 16°.
This card was printed at the Boston Public Library, October 24, 1916. Ko9631 — Sex hygiene.