- Cooperative societies--California18
- Socialism--California18
- T18
- World War, 1939-194518
- American literature--20th century17
- African Americans--Civil rights--Ephemera14
- Civil rights movements--United States--Ephemera14
- Political activists--United States--Ephemera14
- Japanese manuscripts13
- Poets, American--20th century--Archives13
- Yale Association of Japan Collection13
- Authors--United States--20th century12
- Illumination of books and manuscripts, Medieval12
- Authors and publishers--United States11
- Authors, English--19th century11
- Composers--England11
- Manuscripts--Collectors and collecting--Great Britain11
- Soldiers--United States11
- Authors, American--20th century10
- Manuscripts, American -- Connecticut -- New Haven.10