Mora attempts to outline various theories of history as they can be applied to a history of science and psychiatry. A more practical aspect of the paper is a bibliography of over three hundred items which would be valuable to librarians or anyone reading psychiatry. In connection with this the author delineates categories into which matters of special interest would fall such as the heroes of psychiatry and major books and papers on psychiatry with clinical descriptions and classifications. Psychoanalysis is referred to as a special problem for the historian. Zilboorg's book, A History of Medical Psychology, is acknowledged to be the only one in English of ample breadth. The author provides intelligent criticism of it.