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Subject
- History6
- United States. Federal Bureau of Investigation6
- Politics and government4
- Cold War3
- Dissenters3
- Espionage3
- Howe, Irving3
- Intellectuals3
- Intelligence service3
- Macdonald, Dwight3
- Political activity3
- Social aspects3
- Trilling, Lionel, 1905-19753
- Alianza Federal de las Mercedes1
- Chicano movement1
- Civil rights workers1
- Conspiracies1
- Espionage, American1
- Estrada, Enrique, 1890-19421
- Ethnic relations1