Columbia subject headings:
Bishops--Germany--Biography.
Catholic Church--Germany--Bishops--Biography.
Church and state--Germany--Catholic Church.
Church and state--Germany--History--1933-1945.
Sproll, Joannes Baptista, 1870-1949.
Harvard subject headings:
Church and state--Germany--History--1933-1945--Sources.
Rothenburg ob der Tauber (Germany)--Church history--20th century.
Sproll, Joannes Baptista, 1870-1949
Princeton subject headings: