Institution
University of Notre Dame
82
Philadelphia Archdiocesan Historical Research Center (PAHRC)
22
University of Dayton
19
Catholic Theological Union
11
Catholic University of America
5
Boston College
4
Marquette University
4
Barry University
3
College of the Holy Cross
2
Loyola University Chicago
2
Catholic Research Resources Alliance
1
Seton Hall University
1
Villanova University
1