Institution
University of Pennsylvania
21
University of Pittsburgh
7
Rutgers University
5
Bryn Mawr College
4
Pennsylvania State University
4
New York University
3
State Library of Pennsylvania
3
Temple University
3
Lehigh University
2
Montclair State University
2
Villanova University
2
West Chester University
2
Bucknell University
1
Franklin and Marshall College
1
Gannon University
1
Gettysburg College
1
Lafayette College
1
Lebanon Valley College
1
Muhlenberg College
1
West Virginia University
1