26 May – Saint Eleutherius

Modern Hagiography

Lives of the Saints by Alban Butler.

Roman Martyrology

Sanctorale Catholicum

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

La vie des saints

Evenings with the Saints

Medieval Hagiography

BHL

Acta Sanctorum

Ecclesiastical History of Bede.

History of the Kings of Britain by Geoffrey of Monmouth.

Art & Architecture

Index of Medieval Art

BeWeB

Shrine in the Chapel of Saint Lawrence in the Church of Santa Susanna in Rome

Sistine Chapel, South Wall

in situ
Die Sixtinische Kapelle
Post-Biblical Saints Art Index

The Saints in Art by Joseph Maria von Radowitz.