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Credit
Types of mankind, or, Ethnological researches, based upon the ancient monuments, paintings, sculptures, and crania of races, and upon their natural, geographical, philological and Biblical history / illustrated by selections from the inedited papers of Samuel George Morton and by additional contributions from L. Agassiz, W. Usher, and H.S. Patterson ; by J.C. Nott and Geo. R. Gliddon. Public Domain Mark. Source: Wellcome Collection.