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
Breviarium Romanum – Latin & English
The Golden Legend (and illustrations)
Writings of Pope Marcellus
Art & Architecture
The church of San Marcello al Corso in Rome – info, photos.
18C Libro del Compendio della Vita di tutti Santi
Warburg Institute Iconographic Database
Guide to Christian Iconography: Images, Symbols, and Texts
Post-Biblical Saints Art Index
Lives and Legends of the Great Hermits and Fathers of the Church, with Other Contemporary Saints by Mrs. Arthur Bell.
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.