For the Plecker story, see Smith, J. Douglas (2002). "The Campaign for Racial Purity and the Erosion of Paternalism in Virginia, 1922–1930: 'Nominally White, Biologically Mixed, and Legally Negro'". Journal of Southern History. 68 (1): 65–106. doi:10.2307/3069691. JSTOR3069691.
For the Plecker story, see Smith, J. Douglas (2002). "The Campaign for Racial Purity and the Erosion of Paternalism in Virginia, 1922–1930: 'Nominally White, Biologically Mixed, and Legally Negro'". Journal of Southern History. 68 (1): 65–106. doi:10.2307/3069691. JSTOR3069691.
Conrad P. Kottak, "What is hypodescent?"Archived 14 August 2010 at the Wayback Machine, Human Diversity and "Race", Cultural Anthropology, Online Learning, McGraw Hill. Retrieved 21 April 2010.
Cooper, Erica Faye (2008). One 'speck' of imperfection—Invisible blackness and the one -drop rule: An interdisciplinary approach to examining Plessy v. Ferguson and Jane Doe v. State of Louisiana (Thesis). ProQuest193505748.
Melvin Randolph Gilmore, "The True Logan Fontenelle", Publications of the Nebraska State Historical Society, Vol. 19, edited by Albert Watkins, Nebraska State Historical Society, 1919, pp. 64–65, at GenNet. Retrieved 25 August 2011.
Conrad P. Kottak, "What is hypodescent?"Archived 14 August 2010 at the Wayback Machine, Human Diversity and "Race", Cultural Anthropology, Online Learning, McGraw Hill. Retrieved 21 April 2010.