Series
- Corpus Christianorum46
- Early English newspapers46
- Eric Milton Nicholls collection42
- Publications (Parker Society (Great Britain))42
- Concilium40
- Making of the modern world. Part 2 (1851-1914)39
- Studi e testi (Biblioteca apostolica vaticana)39
- The making of the modern world. Part 2 (1851-1914)39
- Church in the colonies36
- Nineteenth Century Collections Online (NCCO): Women: Transnational Networks36
- Publications (Parker Society / Great Britain)35
- Dutch pamphlets33
- Eighteenth century collections online32
- Lindsay, Lionel32
- All Melbourne matters. Research of the church in Melbourne for the future of the church and the city31
- Studies in church history31
- Collection of Jamie and Michael Kassler30
- Lancashire Parish Register Society (Series)30
- Studi e testi30
- Archives of Human Sexuality and Identity: LGBTQ History and Culture since 194029