Collection
- Ingles Family Collection, 1797/18232
- Institute for the History of Technology and Industrial Archaeology Records, 1875/2005, bulk 1980/20054
- International Association for Identification Records, 1842/2012, bulk 1910/19591
- Iron Foundry Ledger, 1797/17982
- Irvine-Saunders Family Papers 1745-1910 Inclusive9
- Isaac Schofield Collection 1798-18321