On the causes of idiocy; being the supplement to a report by Dr. S.G. Howe and the other commissioners appointed by the Governor of Massachusetts to inquire into the condition of the idiots of the Commonwealth, dated February 26, 1848. With an appendix.
Massachusetts.Commission on Condition of Idiots of the Commonwealth.
Howe, S. G.(Samuel Gridley),1801-1876.
Edinburgh : Maclachlan and Stewart,  South Bridge Street ; London : Simpkin, Marshall, and Co.,
MDCCCLVIII. [1858]
Bound with 4 p. of advertisements for works by George Combe.
People with mental disabilities
Mental retardation.