Title: Ut per litteras apostolicas
Description: Searchable registers of papal letters from the 13th- and 14th-century popes, based on Registres et lettres des Papes du XIIIe sic̈le (32 vols.; Rome, 1883- ) and Registres et lettres des Papes du XIVe sic̈le (48 vols.; Rome, 1899- ).
Subjects: Papal Letters, Correspondence, Papacy, Sources, History, Catholic Church
People: John XXII Pope (-1334), Benedict XII Pope (-1342), Urban V Pope (1310-1370)