Content Provider
Hunter Library Digital Collections (Western Carolina University)
11
PALNI Digital Library Collections (Private Academic Library Network of Indiana)
7
The University of Utah: J. Willard Marriott Digital Library
5
Loyola University Chicago Digital Special Collections
2
UTSA Digital Collections (The University of Texas at San Antonio)
2
University of Lethbridge Digitized Collections
2
HELDA – University of Helsinki Open Repository
1
Saint Louis University Libraries Digital Collections
1
University of Lodz Repository (RUŁ)
1
Unknown
1