Early 1964:

Chicago Catholic Interracial Council
Chatham-Avalon Park Community Council
Chicago Urban League
Committee to End Discrimination in Chicago Medical Institutions
Congress of Racial Equality (Chicago Chapter)
Cook County Bar Association
Cook County Physicians Association
Dearborn Real Estate Board
Ecumenical Institute
Englewood Committee for Community Action
Englewood Christian Leadership Conference
Episcopal Society for Cultural and Racial Unity
Fellowship for Racial Justice Now (United Church of Christ)
Interracial Council of Methodists
National Association for the Advancement of Colored People (Chicago Branch)
Negro American Labor Council
Presbyterian Interracial Council
Roseland Heights Community Association
Student Nonviolent Coordinating Committee (Chicago Area Friends of)
Teachers for Integrated Education
The Woodlawn Organization

Joining in 1964:

American Friends Service Committee (Chicago Office)
Altgeld-Murray Parents Council
Chicago Area Council of Liberal Churches
Citizens Housing Committee
Lincoln Dental Society
National Lawyers Guild (Chicago Chapter)
United Citizens Committee for Freedom of Residence in Illinois
West Chatham Community Improvement Association

Source: Anderson and Pickering, Confronting the Color Line, p. 473.