Content Provider
SFU Digitized Collections (Simon Fraser University)
40
The Seattle Public Library Special Collections Online
35
Arca (BC's Digital Treasures)
10
UNBC's Digital Institutional Repository (University of Northern British Columbia)
9
Summit - SFU Research Repository (Simon Fraser University)
8
University of British Columbia: cIRcle - UBC's Information Repository
8
APS Digital Library (American Philosophical Society)
4
The Online Books Page (Penn Libraries, University of Pennsylvania)
4
DataCite Metadata Store (German National Library of Science and Technology)
2
PRISM - University of Calgary Digital Repository
2
University of Washington, Seattle: Digital Collections
2
Washington State University: WSU Libraries Digital Collections
2
McGill University: eScholarship@McGill
1
Princeton Theological Seminary: Theological Commons
1
The Library of Congress: American Memory
1
University of Louisville: ThinkIR
1