1. North Carolina Mortality Census, 1850, 1860, 1870, 1880;Almasy,1994
2. A theory of marriage: part I;Becker;Journal of Political Economy,1973
3. A theory of marriage: part II;Becker;Journal of Political Economy,1974
4. Report on the Mortality and Vital Statistics of the United States as Returned at the Tenth Census (June 1, 1880);Billings,1885
5. The mulatto advantage: the biological consequences of complexion in rural antebellum Virginia;Bodenhorn;Journal of Interdisciplinary History,2002