Overview: The Nahum Capen papers, 1783-1885 (inclusive), 1826-1885 (bulk), consist chiefly of letters addressed to Capen and to the firm of Marsh, Capen, and Lyon, requesting information on or discussing phrenology; concerning establishment and meetings of phrenological societies in Boston and elsewhere; and other professional matters. Also includes social invitations, letters of transmittal and recommendation, documents from phrenological societies, and Capen’s collection of autograph letters.