- Cables, Submarine--Australia--Maps1
- Cables, Submarine--Maps.2
- Cables, Submarine--Russia--Maps1
- Cables, Submarine--Soviet Union--Maps1
- Cadastres--Italy--Venice--Maps6
- Caddo Indians1
- California --Gold discoveries1
- Camp sites, facilities, etc.--Québec (Province)--Mégantic, Lake Region--Maps1
- Camp sites, facilities, etc.--Rangeley Lakes Region (Me. and N.H.)--Maps1
- Campaigns1
- Canals2
- Canals --Pennsylvania --Maps --Early works to 18001
- Canals, Interoceanic1
- Canals, Interoceanic--Planning--Maps2
- Canals--Central America--Planning--Maps2
- Canals--Connecticut--Maps2
- Canals--Florida--Maps1
- Canals--France--Maps1
- Canals--Illinois--Maps1
- Canals--Japan--Kantō Region--Maps1
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
