Modern Hagiography
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
The Liturgical Year by Dom Guéranger.
The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.
Medieval Hagiography
The Cult of Saints in Late Antiquity Database
Pope Damasus’s Epitaph
“Nereus and Achilleus the martyrs joined the army and carried out the cruel orders of the tyrant, obeying his will continually out of fear. Then came a miracle of faith. They suddenly gave up their savagery, they were converted, they fled the camp of their evil leader, throwing away their shields, armor, and bloody spears. Professing the faith of Christ, they are happy to witness to its triumph. From these words of Damasus understand what great deeds can be brought about by Christ’s glory.” (quoted many places, searching for the source)
The Golden Legend (and illustrations)
Breviarium Romanum – Latin & English.
Art & Architecture
Index of Medieval Art – Saint Nereus & Saint Achilleus
Catalogo generale dei beni culturali
POP : la plateforme ouverte du patrimoine
Warburg Institute Iconographic Database
Vatican Colonnade – Nereus & Achilleus
The church of Santi Nereo e Achilleo in Rome
Rubens, Saint Domitilla with Saints Nereus and Achilleus
Sacred and Legendary Art volume II by Mrs. Jameson.
A Handbook of Christian Symbols and Stories of the Saints as Illustrated in Art by Clara Erskine Clement.
Saints and their Symbols: A Companion in the Churches and Picture Galleries of Europe by E. A. Greene.
The Saints in Art by Joseph Maria von Radowitz.
Nihil sub sole novum 