On the causes of idiocy : being the supplement to a report by 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.

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On the causes of idiocy : being the supplement to a report by 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. Public Domain Mark. Source: Wellcome Collection.