Columbia subject headings:
Papacy--History--1447-1565.
Harvard subject headings:
Catholic Church--Foreign relations--Switzerland.
Church history--Middle Ages, 600-1500
Diocese of Basel (Switzerland). Konferenz.
Geraldini, Angelo, 1422-1486--Correspondence.
Switzerland--Foreign relations--Catholic Church.
Princeton subject headings:
Papacy--History--1447-1565--Sources.