Universal HistoryengAgapius 250-306

Uniformity With  Gods WillengAlphonsus de Ligouri 1696–1787

De Utilitate Credendi Ad Honoratum354-430latAugustine of Hippo 354-430

De Unitate Sanctae Trinitatis Dialogus [Incertus]354-430latAugustine of Hippo 354-430

De Unico Baptismo Contra Petilianum Ad Constantinum. Retractatio354-430latAugustine of Hippo 354-430

De Unico Baptismo Contra Petilianum Ad Constantinum354-430latAugustine of Hippo 354-430

Ubi PrimumengBenedict XIV 1334-42

UBI PRIMUMlatBenedict XIV 1334-42

Unam SanctamengBoniface VIII 1294-1303

UnigenitusengClement XI 1700-21

Uncertain Papyrus Fragmenteng ⸱ grcCyril of Alexandria 376-444

Uncertain Homiliary Fragmentseng ⸱ grcCyril of Alexandria 376-444

Utopia of Usurers and Other EssaysengG. K. Chesterton 1874-1936

Upon This RockengG. K. Chesterton 1874-1936

Ubi PrimumengLeo XII 1823-29

Ubi primum (2 Octobris 1898)1898-10-02latLeo XIII 1878-1903

Urbanitatis veteris (20 Novembris 1901)1901-11-20latLeo XIII 1878-1903

Ubi primum (die 28 Martii 1878)1878-03-28latLeo XIII 1878-1903

Unitatis christianae (11 Iunii 1895)1895-06-11latLeo XIII 1878-1903

Ubi PrimumengPius IX 1846-78

Ubi NosengPius IX 1846-78

Ubi PrimumengPius IX 1846-78

Une Fois Encore (January 6, 1907)1907-01-06engPius X 1903-14

Ubi Arcano Dei ConsilioengPius XI 1922-39

Umbratilem, Statuta Ordinis Cartusiensïs, ad normam codicis revisa, definitive approbantur (d. 8 m. Iulii a. 1924)1924-07-08latPius XI 1922-39

Ut aucto, Litterae Apostolicae, Dismembrato territorio ex vicariatu apostolico de Tsinanfu erigitur missio independens de Changtien in Sinis, d. 16 m. Aprilis a. 1929, Pius PP. XI1929-04-16latPius XI 1922-39

Untitled1952-02-27engPius XII 1939-58

Untitled1952-05-27engPius XII 1939-58

Untitled1955-07-08engPius XII 1939-58

Untitled1948-07-25latPius XII 1939-58

Untitled1954-07-14engPius XII 1939-58

Untitled1954-11-19engPius XII 1939-58

Untitled1950-02-23engPius XII 1939-58

Untitled1950-05-25engPius XII 1939-58

Untitled1950-10-01engPius XII 1939-58

Untitled1953-10-25engPius XII 1939-58

Untitled1953-10-04engPius XII 1939-58

Untitled1954-09-08engPius XII 1939-58

Untitled1953-10-14engPius XII 1939-58

Untitled1950-09-08engPius XII 1939-58

Untitled1952-03-24engPius XII 1939-58

Untitled1953-04-08engPius XII 1939-58

Untitled1953-04-19engPius XII 1939-58

Untitled1948-02-18engPius XII 1939-58

Untitled1951-11-23engPius XII 1939-58

Untitled1953-12-08engPius XII 1939-58

Untitled1951-04-29engPius XII 1939-58

Untitled1955-11-01engPius XII 1939-58

Untitled1948-01-30engPius XII 1939-58

Untitled1954-11-11engPius XII 1939-58

Untitled1955-12-12engPius XII 1939-58

Untitled1951-02-28engPius XII 1939-58

Untitled1951-02-25engPius XII 1939-58

Untitled1952-04-10engPius XII 1939-58

Untitled1950-02-23engPius XII 1939-58

Untitled1955-11-10engPius XII 1939-58

Untitled1951-01-25engPius XII 1939-58

Untitled1953-10-05engPius XII 1939-58

Untitled1954-01-18engPius XII 1939-58

Untitled1955-12-04engPius XII 1939-58

Untitled1953-06-14engPius XII 1939-58

Untitled1953-10-29engPius XII 1939-58

Untitled1954-12-08engPius XII 1939-58

Untitled1951-06-23engPius XII 1939-58

Untitled1955-10-09engPius XII 1939-58

Untitled1955-07-02engPius XII 1939-58

De Unione VerbilatThomas Aquinas 1225-1274

De Unitate IntellectuslatThomas Aquinas 1225-1274

Utrum In Creaturis Sit Ordo AgendilatThomas Aquinas 1225-1274

UtopiaengThomas More 1478-1535