Santo Stefano Rotondo
Saint Prime et Félicien devant le juge (France, Paris. Bibliothèque nationale de France, Département des manuscrits, Français 51 f.66)
Modern Hagiography
Bibliotheca Sanctorum
Martyrologium Romanum
Roman Martyrology
Sanctorale Catholicum
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
The Liturgical Year by Dom Guéranger.
Character Calendar
Pictorial Lives of the Saints
The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.
La vie des saints
Medieval Hagiography
BHL, Supplement
Acta Sanctorum
The Cult of Saints in Late Antiquity Database
The Golden Legend (and illustration)
Breviarium Romanum – Latin & English.
Art & Architecture
Index of Medieval Art
Portail Biblissima
POP : la plateforme ouverte du patrimoine
Europeana
BeWeB
Warburg Institute Iconographic Database
The Chapel of Saints Primus and Felicianus in the church of Santo Stefano Rotondo in Rome (gallery of photos of the church, including the mosaics in the chapel, photo of the apse mosaic, paintings of cycle of martyrdoms by Antonio Tempesta)
Post-Biblical Saints Art Index
Saints and their Attributes
Saints and their Emblems
Caractéristiques des saints dans l’art populaire by Charles Cahier – groupe, lion.
Emblems of Saints by Which They Are Distinguished in Works of Art by F. C. Husenbeth.
Music
Cantus: A Database for Latin Ecclesiastical Chant