机构
Philadelphia Archdiocesan Historical Research Center (PAHRC)
60
Marquette University
31
Catholic Theological Union
25
University of Notre Dame
22
Catholic University of America
17
University of Dayton
17
Benedictine University
6
Loyola University Chicago
5
Boston College
4
Loyola Marymount University
3
Barry University
2
College of the Holy Cross
2
Fontbonne University
2
Archdiocese of Cincinnati
1
Catholic Research Resources Alliance
1
Georgetown University
1
Seton Hall University
1