• 6 Microforms

• 72 Church history
• 36 History
• 11 Sources
• 9 Christian literature, Early
• 5 Church and state
• 5 Councils and synods, Ecumenical
• 4 Christian life
• 4 Christian pilgrims and pilgrimages
• 4 Christianity
• 4 Church polity
• 4 Fathers of the church
• 4 Religion
• 3 Church orders, Ancient
• 3 Description and travel
• 3 History and criticism
• 3 Liturgies, Early Christian
• 3 Paul, the Apostle, Saint
• 2 Apologetics
• 2 Bible
• 2 Canon
• 2 Canon law
• 2 Catholic Church
• 2 Christian saints
• 2 Clement I, Pope
• 2 Council of Nicaea (1st : 325 : Nicaea, Turkey)

• 4 Clement I, Pope
• 3 Hippolytus, Antipope, approximately 170-235 or 236
• 3 Stevenson, James, 1901-1983
• 2 Alberigo, Giuseppe
• 2 Brock, Sebastian P
• 2 Browne, Thomas, 1604?-1673
• 2 Colomiès, Paul, 1638-1692
• 2 Cotelier, Jean-Baptiste, 1629-1686
• 2 Fell, John, 1625-1686
• 2 Gregory, Bishop of Tours, Saint, 538-594
• 2 Istituto per le scienze religiose di Bologna
• 2 Melloni, Alberto
• 2 Porphyry, approximately 234-approximately 305
• 2 Rahner, Hugo, 1900-1968
• 2 Wendelen, Govaart, 1580-1667
• 2 Wilkinson, John, 1929-2018
• 2 Young, Patrick, 1584-1652
• 1 Abbo, of Fleury, Saint, approximately 945-1004
• 1 Abramowski, Luise
• 1 Agrestini, Silvano
• 1 Alliata, Eugenio
• 1 Ammonius, active 4th century
• 1 Anastasius, Sinaita, Saint, active 640-700
• 1 Angliviel de La Beaumelle, Laurent, 1936-
• 1 Athanassiadi, Polymnia

• 38 English
• 26 Latin
• 19 Greek, Ancient (to 1453)
• 12 French
• 11 German
• 5 Italian
• 3 Spanish
• 2 Greek, Modern (1453-)
• 2 Hebrew
• 2 Russian
• 2 Syriac
• 2 Syriac, Modern
• 1 Ethiopic

• 4 Egypt
• 4 Rome
• 2 France
• 2 Jerusalem
• 2 Palestine
• 1 Africa, North
• 1 Byzantine Empire
• 1 Carthage (Extinct city)
• 1 Middle East
• 1 Sinai
• 1 Sinai (Egypt)
• 1 Spain
• 1 Vatican City
• 1 Zaragoza (Spain)

• 13 Early works to 1800
• 4 Controversial literature
• 3 Christian literature, Early
• 2 Biography
• 2 Translations into English
• 1 Bibliography
• 1 Bilingual books
• 1 Biographies
• 1 Concordances
• 1 Congresses
• 1 Diaries
• 1 Ethiopic literature
• 1 Hagiographies
• 1 Translations into French
• 1 hagiographies (works)

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