Institution
Pennsylvania State University
660
University of Pennsylvania
81
Temple University
73
State Library of Pennsylvania
57
Rutgers University
51
New York University
44
University of Pittsburgh
35
Lehigh University
33
West Virginia University
25
Commonwealth University of Pennsylvania
24
Villanova University
21
Gettysburg College
18
Bucknell University
17
Franklin and Marshall College
17
Montclair State University
17
Bryn Mawr College
15
Drew University
15
Lafayette College
15
Lebanon Valley College
10
Indiana University of Pennsylvania
9
Pennsylvania Western University
9
Seton Hall University
9
Carnegie Mellon University
8
Dickinson College
8
Duquesne University
8
Muhlenberg College
8
Rowan University
6
Swarthmore College
6
Ursinus College
6
Mercyhurst University
5
Moravian University
5
Point Park University
5
West Chester University
5
Haverford College
4
Marshall University
4
Slippery Rock University
4
Widener University
4
York College of Pennsylvania
4
Drexel University
3
Gannon University
3
King's College
3
La Salle University
3
Misericordia University
3
Susquehanna University
3
Cairn University
2
East Stroudsburg University
2
Lycoming College
2
Saint Joseph's University
2
Thomas Jefferson University
2
West Liberty University
2
more ...