J. Ricci, The Genealogy of Gynaecology 52, 84, 113, 149 (2d ed. 1950) (hereinafter Ricci); L. Lader, Abortion 75-77 (1966) (hereinafter Lader); K. Niswander, Medical Abortion Practices in the United States, in Abortion and the Law 37, 38-40 (D. Smith ed. 1967); G. Williams, The Sanctity of Life and the Criminal Law 148 (1957) (hereinafter Williams); J. Noonan, An Almost Absolute Value in History, in The Morality of Abortion 1, 3-7 (J. Noonan ed. 1970) (hereinafter Noonan); Quay, Justifiable Abortion -- Medical and Legal Foundations (pt. 2), 49 Geo. L. J. 395, 406-422 (1961) (hereinafter Quay).