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.
Hermengildo, a 19C play in Spanish
Medieval Hagiography
Dialogues of Gregory the Great (Book 3, chapter 31; alternately)
Art & Architecture
17C Triumph of Saint Hermengild
Warburg Institute Iconographic Database
A Guide to Christian Iconography: Images, Symbols, and Texts
Post-Biblical Saints Art Index
A Handbook of Christian Symbols and Stories of the Saints as Illustrated in Art by Clara Erskine Clement.
Lives and Legends of the Great Hermits and Fathers of the Church, with Other Contemporary Saints by Mrs. Arthur Bell.
Saints and their Symbols: A Companion in the Churches and Picture Galleries of Europe by E. A. Greene.
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
Devotions
Manna for the Soul: Meditations for Every Day of the Year by Paulo Segneri.
Nihil sub sole novum 