Publications of Atlanta University: No. 1. Mortality Among Negroes in Cities. No. 2. Social and Physical Condition of Negroes. No. 3. Efforts of Negroes for Social Betterment. --Atlanta, Ga., 1896-98.
Edward Bettle. "Notices of Negro Slavery as Connected with Pennsylvania". In Mem. Hist. Soc. of Pennsylvania, I.
Charles Booth. Life and Labour of the People. London, 1892.
M. Carey and J. Bioren. Laws of Pennsylvania, 1700-1802. Philadelphia, 1803.
A. J. Dallas. Laws of Pennsylvania, 1700-1781. Philadelphia, 1797.
W. E. Burghardt DuBois. Suppression of the Slave Trade. New York, 1896.
----- "The Study of the Negro Problems". Annals of the Amer. Acad. of Pol. and Soc. Science. Philadelphia, 1898.
-----The Negroes of Farmville, Va. ( U. S. Bureau of Labor Bulletin, January, 1898.)
[ Benjamin Franklin.] An Essay on the African Slave Trade. Philadelphia, 1790.
[Friends.] Germantown Friends' Protest Against Slavery, 1688. (Facsimile copy) Philadelphia, 1880.
[Friends.] The Appeal of the Religious Society of Friends in Pennsylvania, New Jersey, etc.... on behalf of the Colored Races. Philadelphia, 1858.
[Friends.] A Brief Statement of the Rise and Progress of the Testimony of the Religious Society of Friends against Slavery and the Slave Trade. Philadelphia, 1843.
Samuel Hazard. The Register of Pennsylvania. Philadelphia, 1828-36.