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
Writings of Pope Hyginus
Art & Architecture
Index of Medieval Art
– El Escorial, Real Biblioteca, Cod. Vitrinas 17, folio 4v: SANCTVS IGINVS EPISCOPVS DECIMVS VRBIS ROMAE A SANCTO PETRO (detail above)
Catalogo generale dei beni culturali
see also
Nihil sub sole novum 