Subject
- Labor unions and socialism48
- Letters48
- Journalism43
- Science43
- Travel42
- World War, 1914-191836
- United States—Politics and government—20th century35
- French Literature34
- Slavs33
- Medicine32
- Booksellers and bookselling31
- Authors, American30
- Indiana--History30
- Authors, American--20th century--Correspondence27
- Authors, American--Correspondence26
- Radio23
- Voyages and travels20
- Indiana University -- Faculty19
- Television19
- Authors, English--Correspondence18