Cite this: Morton, Samuel George. 1839. Crania americana or, A comparative view of the skulls of various aboriginal nations of North and South America. To which is prefixed an essay on the varieties of the human species. Illustrated byseventy-eight plates and a colored map., Philadelphia : J. Dobson; London : Simpkin.Marshall & co.
Supplied Caption: Map depicting the distribution of Caucasian, Mongolian, Malay, American, and Ethiopian races, with respect to the phrenological considerations outlined in Samuel Morton's 19th century study.
Original Caption: The world showing the geographical distribution of the human species. Engraved for Dr. Morton's Crania Americana.