Collection
- IAWA Small Collections,35
- IAWA: International Archive of Women in Architecture Records10
- Ida Libby Dengrove sketches1
- Ignorance Club collection1
- Imogene M. King Papers1
- Indochina Institute records1
- Inez Orler, Author (1880-1979), Unpublished Manuscripts1
- Inge Horton Architectural Collection60
- Ingleside Book Club Records1
- Institute for Advanced Public Policy Studies records1
- Institute for the History of Technology and Industrial Archaeology Records89
- Institute for the History of Technology and Industrial Archaeology, Records regarding Blair Mountain1
- Institute of Contemporary Art2
- Institute of Management Records2
- Institute on the Teaching of Latin Records2