Founding of the National Guild of Catholic Psychiatrists
1952
In response to a notice placed in the American Journal of Psychiatry, eighteen Catholic psychiatrists under the leadership of Dr. Edward L. Brennan formed the first religion-based association recognized by the American Psychiatric Association.
Source: Abraham Nussbaum, "Profession and Faith: The National Guild of Catholic Psychiatrists, 1950–1968, Catholic Historical Review 43 (October 2007): 845–865.