- University of Alberta: ualberta_collection.json
- PIMS - University of Toronto: pims_collection.json
- University of Toronto (external links)
- McGill University: mcgill_collection.json
- Queen's University, Belfast: qubelfast_collection.json
- Parker Library, Corpus Christi College (external link)
- University of Alabama, Birmingham
- The Huntington Library
- Loyola Marymount University
- Stanford University
- University of Colorado, Boulder: ucboulder_collection.json
- US National Library of Medicine: nlm_collection.json
- Boston College: bc_collection.json
- Boston Public Library bpl_collection.json
- Tufts University: tufts_collection.json
- Western Michigan University: wmu_collection.json
- University of Minnesota: Collection
- Missouri State University , Special Collections & Archives: mostate_collection.json
- Newark Public Library: newark_collection.json
- Fordham University: fordham_collection.json
- Siena College: siena_collection.json
- Oberlin College and Conservatory: oberlin_collection.json
- Ohio State University Rare Books & Manuscripts Library: osu_collection.json
- Ohio University Libraries: ohiou_collection.json
- Ohio Wesleyan University: ohiowesleyan_collection.json
- University of Portland, Clark Library: up_collection.json
- Bryn Mawr College: brynmawr_collection.json
- University of Scranton: scranton_collection.json
- University of South Carolina, Irvin Department of Special Collections: usc_collection.json
- Baylor University: baylor_collection.json
- Southern Methodist University, Bridwell Library - single images from incunabula, not complete books: smu_collection.json
- Trinity University, Coates Library: trinity_collection.json
- Utah State University: usu_collection.json
- University of Washington Libraries: uw_collection.json