Collection
- IAWA Small Collections,2
- IAWA: International Archive of Women in Architecture Records1
- Independent Order of St. Luke Records3
- Indiana Oil Company Minutes and Bylaws2
- Inge Horton Architectural Collection80
- Institute for the History of Technology and Industrial Archaeology Records23
- Instructive Visiting Nurses Association records8
- Internal Library Records1
- International Association for Identification Records45
- International Order of Odd Fellows, Lodge 134, Ledgers1
- Ira E. Robinson Papers3
- Iron Gate, Virginia, Ledgers,1
- Irvine-Saunders Family Papers 1745-1910 Inclusive8
- Isaac & Josiah Williams Brick Company, Account Books1
- Isaac B. Smith, Farmer and Music Teacher, Newspaper Clippings and Other Material1