Subject
- Textile workers Labor unions8
- Universities and colleges8
- World War, 1939-1945 Peace8
- Agriculture7
- Atrocities7
- Conscientious objectors7
- Constitutional law7
- Elections United States7
- Freedom of speech7
- Jewish-Arab relations7
- May Day (Labor holiday)7
- Minorities7
- Nuclear disarmament7
- Peace Congresses7
- Political parties United States7
- Population7
- Revolutions7
- Security, International7
- Sex role7
- Slavery7