1. Embracing the Rainbow;Green,1999
2. Physiological and Medical Observations among the Indians of Southwestern United States and Northern Mexico;Hrdlička,1908
3. Cancer among the American Indians and its bearing upon the ethnologicaI distribution of the disease;Levin;Z. Krebsforsch.,1910
4. Freedom of Negro races from cancer;Fouché;Br. Med. J.,1923
5. The most northerly practice in Canada (first published 1935);Urquhart;CAMJ,1992