"I am glad to be able to say that the number of children to be retarded is growing less each year. Most of our retarded pupils come to us from outside of our own schools."
- W.H.S. Ellingwood, Superintendent of Schools. Fortieth Annual Report: City of Westbrook, Maine: 1930 (Westbrook, Maine: H.S. Cobb, Printer, 1931).
- John C.L. Morgan