Institution
Philadelphia Archdiocesan Historical Research Center (PAHRC)
332
University of Notre Dame
10
Marquette University
9
College of the Holy Cross
6
Regis University
3
University of Dayton
3
Fontbonne University
2
Barry University
1
Benedictine University
1
Catholic Research Resources Alliance
1
Saint Joseph's University
1
St. Michael's College
1
Villanova University
1