Teaching the idiot. : A lecture, delivered in St. Martin's Hall, London, August 4, 1854, in connection with the Educational Exhibition of the Society of Arts, Manufactures, and Commerce. / By the Rev. Edwin Sidney, M.A.

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Teaching the idiot. : A lecture, delivered in St. Martin's Hall, London, August 4, 1854, in connection with the Educational Exhibition of the Society of Arts, Manufactures, and Commerce. / By the Rev. Edwin Sidney, M.A. Public Domain Mark. Source: Wellcome Collection.