Author
American Colonization Society
42
Ethnic Heritage Studies Program (U.S.)
35
Du Bois, W. E. B. 1868-1963
34
Philadelphia Record
32
Joint Center for Political Studies (U.S.)
29
Whiteman, Maxwell
23
Commission on Interracial Cooperation
20
Hughes, Langston, 1902-1967
16
United States Commission on Civil Rights
16
United States. Bureau of the Census
16
Gates, Henry Louis, Jr
15
Mercer, Charles Fenton, 1778-1858
15
Foner, Philip Sheldon, 1910-
13
Pennsylvania Colonization Society
13
Aptheker, Herbert, 1915-
12
Carey, Mathew, 1760-1839
12
Blockson, Charles L.
11
Wharton School. Industrial Research Unit
11
Christy, David, 1802-1882
10
Eleazer, Robert B. 1877-
10
National Association for the Advancement of Colored People
10
Washington, Booker T., 1856-1915
10
Woodson, Carter Godwin, 1875-1950
10
Wright, Richard, 1908-1960
10
Armstrong Association of Philadelphia
9
Association for the Study of Negro Life and History, inc
9
Douglass, Frederick, 1818-1895
9
Himes, Chester B., 1909-
9
Kentucky Colonization Society
9
Lewis, Ronald L., 1940-
9
Wesley, Charles H. 1891-1987
9
American Society for Colonizing the Free People of Colour of the United States
8
Ashmun, J. 1794-1828
8
Baraka, Imamu Amiri, 1934-
8
Hine, Darlene Clark
8
Hurston, Zora Neale
8
Meier, August, 1923-2003
8
National Black Child Development Institute
8
Philadelphia (Pa.). Commission on Human Relations
8
Schomburg Center for Research in Black Culture
8
United States. Supreme Court
8
University of Michigan. Population Studies Center
8
Afro-American Historical and Cultural Museum (Philadelphia, Pa.)
7
American Anti-Slavery Society
7
Bontemps, Arna Wendell, 1902-1973
7
Cavanagh, Thomas E.
7
Dunbar, Paul Laurence, 1872-1906
7
Harris, Trudier
7
Historical Society of Pennsylvania
7
Johnson, Charles Spurgeon, 1893-1956
7
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