- Encyclopedias and dictionaries, Bohemian11
- Polish language11
- Czech literature10
- Naval art and science10
- Slovenian language10
- Social life and customs10
- History, Naval9
- Translations from foreign literature9
- Voyages and travels9
- Booksellers and bookselling8
- Church Slavic language8
- Encyclopedias and dictionaries, Russian8
- Slavs8
- Catalogs, Booksellers'7
- Citizenship7
- Educational law and legislation7
- Library7
- Natural history7
- Panslavism7
- Rare books7
Libraries & Collections
- Arts Library
- Bass Library
- Beinecke Library
- Classics Library
- Divinity Library
- Film Study Center
- Fortunoff Archive
- Humanities Collections
- International Collections
- Law Library
- Lewis Walpole Library
- Library Collection Services
- Manuscripts & Archives
- Map Collection
- Marx Science & Social Science Library
- Medical Library
- Music Library
- Sterling Library
- Yale Center for British Art
