Other
- Joint Center for Political Studies (U.S.) 14 results
- Foner, Philip Sheldon, 1910- 12 results
- American Colonization Society 10 results
- Du Bois, W. E. B. (William Edward Burghardt), 1868-1963 10 results
- Commission on Interracial Cooperation 9 results
- Lewis, Ronald L., 1940- 9 results
- United States Commission on Civil Rights 8 results
- Wharton School. Industrial Research Unit 8 results
- United States. Supreme Court 7 results
- Berlin, Ira, 1941- 6 results
- Gates, Henry Louis, Jr 6 results
- Aptheker, Herbert, 1915- 5 results
- Cavanagh, Thomas E. 5 results
- Daughters of the American Revolution 5 results
- Franklin, John Hope, 1915- 5 results
- Mott, Abigail, 1766-1851 5 results
- National Association for the Advancement of Colored People 5 results
- Pennsylvania 5 results
- Sigourney, L. H. (Lydia Howard), 1791-1865 5 results
- United States. Bureau of the Census 5 results
- University of Michigan. Population Studies Center 5 results
- American Anti-Slavery Society 4 results
- American Society for Colonizing the Free People of Colour of the United States 4 results
- Colton, Calvin, 1789-1857 4 results
- Conrad, Earl 4 results
- Eleazer, Robert B. (Robert Burns), 1877- 4 results
- Felder, Robert 4 results
- Foner, Eric, 1943- 4 results
- Foust, William Ashe 4 results
- Handlin, Oscar, 1915- 4 results
- Miller, Randall M. 4 results
- O'Hare, William P. 4 results
- Philadelphia (Pa.) 4 results
- Van Evrie, John H., 1814-1896 4 results
- Whiteman, Maxwell 4 results
- Woodson, Carter Godwin, 1875-1950 4 results
- American Academy of Political and Social Science 3 results
- Baldwin, James, 1924- 3 results
- Baraka, Imamu Amiri, 1934- 3 results
- Bell, Derrick, 1930-2011 3 results
- Bennett, Lerone, 1928- 3 results
- Birney, James Gillespie, 1792-1857 3 results
- Blair, Frank P., Jr. (Francis Preston), 1821-1875 3 results
- Botkin, Benjamin Albert, 1901-1975 3 results
- Branch, Taylor 3 results
- City Trusts of the City of Philadelphia 3 results
- Clark, Kenneth Bancroft, 1914- 3 results
- Dilworth, Richardson 3 results
- Foner, Philip Sheldon, 1910-1994 3 results
- Franklin, John Hope, 1915-2009 3 results more…