This photograph shows young men looking at a exhibit of social hygiene posters. This page originally appeared in a book titled, Two Years Fighting V.D. (1920) by the USPHS.
This photograph shows an exhibit about syphilis titled, "The Shadow on the Land" that appeared at the 1939 World's Fair. It features a large microscope, photographs of family and children, and a map of the United States. Fair visitors are shown…