Modern Hagiography
Martyrologium Romanum (11 January)
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
Miniature Lives of the Saints for Every Day
Medieval Hagiography
The Cult of Saints in Late Antiquity Database
Art & Architecture
Index of Medieval Art (nb: work 208345 does not show Peter Apselamus)
Nihil sub sole novum 