“A Personal Odyssey on Schools for Blind Children,” by Philip H. Hatlen,published in the June 1993 issue of the Journal of Visual Impairment & Blindness,Volume 87,Number 6,pp. 171–174

Koestler F. A. (2004). The unseen minority: A social history of blindness in the United States (Rev. ed.). New York: AFB Press.

Lowenfeld B. (1981). On blindness and blind people: Selected papers. New York: American Foundation for the Blind.