- Congress of Industrial Organizations (U.S.)1,364
- AFL-CIO. Civil Rights Department1,338
- Labor leaders1,295
- Labor movement1,266
- Civil rights1,234
- African American women social reformers1,216
- Dwellings1,213
- Sermons1,182
- Voting1,143
- Pro-life movement1,136
- Demonstration1,127
- Children1,118
- African American arts1,113
- Elections1,093
- Voter registration1,051
- Strikes and lockouts1,049
- Airlines999
- Coal mine accidents989
- Football players974
- Presidents972
