- Building Technology Heritage Library Created by the Association for Preservation Technology International to provide access to period trade catalogs and other building construction documents.
- Directory of Open Access Journals Peer-reviewed scholarly journals available freely on-line.
- Gallica Digital library of the Bibliothèque nationale de France. Includes books, maps, manuscripts, sound recordings, and more.
- Illinois Harvest Created by the University of Illinois to provide access to resources about Illinois and by Illinois scholars.
- Internet Archive Digital Library that includes texts, audio and moving images. It is also the home of the "Wayback Machine" that archives webpages.
- Hathi Trust A repository that combines digitized collections from dozens of the nation's great research libraries.
- Ricker Library Digitized Collections Several titles from Ricker Library's collections are available online through Illinois Harvest and the Internet Archive.