Institución
Philadelphia Archdiocesan Historical Research Center (PAHRC)
48
Marquette University
24
Catholic Theological Union
23
University of Notre Dame
18
University of Dayton
8
Catholic University of America
6
Boston College
4
Loyola University Chicago
4
Barry University
2
Loyola Marymount University
2
Archdiocese of Cincinnati
1
Catholic Research Resources Alliance
1
College of the Holy Cross
1
Seton Hall University
1