Content Provider
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
40
The Portal to Texas History (University of North Texas)
25
The Library of Congress: American Memory
21
Hathi Trust Digital Library
10
Harvard University: Harvard Collections
9
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
7
Doria (National Library of Finland)
4
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
3
University of North Texas: UNT Digital Library
3
York University Digital Library
3
Arca (BC's Digital Treasures)
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Digital Library of Wielkopolska
1
HAL Sorbonne Université
1
Institut national des sciences de l'Univers: HAL-INSU
1
MédiHAL
1
NGU Open Archive (Geological Survey of Norway)
1
UNBC's Digital Institutional Repository (University of Northern British Columbia)
1
Washington State University: WSU Libraries Digital Collections
1