Brown, G.Memoir of Dr. H. M. Knight. Association of Medical Officers of American Institutions for Idiotic and Feeble-Minded Persons, Proceedings, 1876–1886 (Reprinted with permission of the American Association on Mental Deficiency by Johnson Reprint Corporation, 111 Fifth Avenue, New York. N.Y., 1964).
2.
Connecticut Medical Society. Proceedings, 1880. New Series, 180–185.
3.
Kanner, L.A history of the care and study of the mentally retarded.Springfield, III.: Charles C Thomas, 1964.