Modern Hagiography
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
The Liturgical Year by Dom Guéranger.
Our Birthday Bouquet Culled from the Shrines of the Saints and the Gardens of the Poets by Eleanor C. Donnelly.
Pictorial Half Hours with the Saints by Auguste François Lecanu.
Contemporary and Medieval Hagiography
Eusebius, Ecclesiastical History on Simeon – here and here.
Art & Architecture
Menologion of Basil II (about)
Warburg Institute Iconographic Database
Post-Biblical Saints Art Index
Emblems of Saints by Which They Are Distinguished in Works of Art by F. C. Husenbeth.