- Afro-Am Publishing Company (Chicago, Illinois)1
- Albert Saifer, Publisher (Philadelphia, Pennsylvania)1
- Alexander Defense Committee (New York, New York)1
- American Council of Christian Churches (New York, New York)1
- Association for the Study of Negro Life and History (Philadelphia, Pennsylvania)1
- Bel-Ad Records (Los Angeles, California)1
- Black Community Fund (Philadelphia, Pennsylvania)1
- Boston Alliance Against Racist and Political Repression (Boston, Massachusetts)1
- Broadside Press (Detroit, Michigan)1
- Bronze Art Card Guild (Richmond, Virginia)1
- Carmichael, Stokely1
- Chicago Defender Newspaper (Chcago, Illinois)1
- Citizens for Jim Barber (Philadelphia, Pennsylvania)1
- Club Five (Philadelphia, Pennsylvania)1
- Comay Productions (New York, New York)1
- Committee for the Freedom of William Worth (New York, New York)1
- Committee to Free Angela Davis (Philadelphia, Pennsylvania)1
- Committee to Free Martin Sostre (New York, New York)1
- Congress of Racial Equality (Washington, District of Columbia)1
- Council on African Affairs (New York, New York)1