Subject
- Labor unions and socialism48
- Letters48
- Journalism43
- Science43
- Travel43
- World War, 1914-191837
- United States—Politics and government—20th century35
- French Literature34
- Slavs33
- Indiana--History32
- Medicine32
- Booksellers and bookselling31
- Authors, American30
- Authors, American--20th century--Correspondence27
- Authors, American--Correspondence26
- African American musicians25
- Radio23
- Television21
- Indiana University -- Faculty20
- Voyages and travels20