Signum Dei in frontibus
the sign of God on their foreheads
Apocalypse 9.4
Numquid non occidit gigantem?
Did not he kill the giant?
Ecclesiasticus 47.4
Modern Hagiography
Lives of the Saints by Sabine Baring-Gould.
Medieval Hagiography
The Cult of Saints in Late Antiquity Database
Passion and Miracles by Anastasius the Librarian
Art & Architecture
A Guide to Christian Iconography: Images, Symbols, and Texts
The Church of Hagios Demetrios in Thessaloniki
Menologion of Basil II (about)
Post-Biblical Saints Art Index
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.
Music
Cantus: A Database for Latin Ecclesiastical Chant
Oratorio by Nicolas Astrinidis
Customs & Devotions
Nihil sub sole novum 