Modern Hagiography
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
Anecdotes and Incidents: Ecclesiastical and Religious
Deeds of Faith by John Mason Neale.
Curious Myths of the Middle Ages by Sabine Baring-Gould.
“The Seven Sleepers of Ephesus” by Goethe.
Medieval Hagiography
Paul the Deacon’s account in his History of the Langobards
An 11th-century Anglo-Norman account of the Seven Sleepers
The Golden Legend (and illustrations)
Art & Architecture
Possible locations of the cave
Warburg Institute Iconographic Database
Post-Biblical Saints Art Index
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.
A Garner of Saints: Being a Collection of the Legends and Emblems Usually Represented in Art by Allen Hinds.
The Saints in Art by Joseph Maria von Radowitz.
Emblems of Saints by Which They Are Distinguished in Works of Art by F. C. Husenbeth.
Nihil sub sole novum 