- Kings1
- Knives1
- Laboratories1
- Lecture halls1
- Liturgics1
- Liturgy1
- Manuscripts, Medieval8
- Masquerades1
- Medallions1
- Medical education2
- Medical equipment & supplies5
- Medical offices5
- Medical tools & equipment2
- Medicinal plants2
- Medicine in the Bible2
- Medicine shows2
- Medicine, Rural3
- Medicines3
- Mentally ill persons5
- Midwifes2
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
