BIRTH CONTROL IN ITS MEDICAL, SOCIAL, ECONOMIC, AND MORAL ASPECTS S. Adolphus Knopf CopyRight*This address was first delivered at the 44th Annual Meeting of the American Public Health Association in Cincinnati, O., October 27, 1916. It was again delivered upon invitation on subsequent dates before the East New York Medical Society, the New York Woman's City Club, and the Social Service League of the Unitarian Church of the Messiah. https://doi.org/10.2105/AJPH.7.2.152 Published Online: August 30, 2011