22 August – Saint Hippolytus of Rome

Modern Hagiography

Bibliotheca Sanctorum

Roman Martyrology

Sanctorale Catholicum

Lives of the Saints by Alban Butler.

Lives of the Saints by Francis Weninger.

Lives of the Saints by Sabine Baring-Gould.

The Liturgical Year by Dom Guéranger.

Character Calendar

The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.

La vie des saints

Wikipedia Entry

Medieval Hagiography

Acta Sanctorum

Prudentius, Peristephanon (?)

Jerome, De viris illustribus (61)

Writings by Saint Hippolytus

Documenta Catholica Omnia 

Apostolic Tradition 

The Refutation of All Heresies (traditionally attributed to Saint Hippolytus, now unattributed)

Extant Works and Fragments 

Quotations in the Writings of Dionysius Syrus 

Early Christian Writings 

On the Blessed Virgin Mary 

Art & Architecture

Index of Medieval Art

Catalogo generale dei beni culturali

Complex of the S. Ippolito’s basilica in Ostia (?)

The Saints in Art by Joseph Maria von Radowitz.