Angelis suis mandavit de te, ut custodiant te.
He hath given his angels charge over thee; to keep thee.
Psalm 90.11
Modern Hagiography
Bibliotheca Sanctorum, see also
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
The Liturgical Year by Dom Guéranger.
Victories of the Martyrs by Saint Alphonsus Liguori.
Pictorial Half Hours with the Saints by Auguste François Lecanu.
Medieval Hagiography
The Cult of Saints in Late Antiquity Database
One century after her martyrdom, the Spanish poet Prudentius wrote about Eulalia in his Peristephanon (Crowns of Martyrdom, in English). Here is the poem in Latin. And here it is in facing Latin and English.
You may read a ninth-century poem in Old French about Eulalia. Translated here (scroll down). The Wikipedia entry, which has both the Old French and the English.
Art & Architecture
Index of Medieval Art (merged with Saint Eulalia of Barcelona)
Catalogo generale dei beni culturali, also
POP : la plateforme ouverte du patrimoine
Warburg Institute Iconographic Database
Guide to Christian Iconography: Images, Symbols, and Texts
Medieval Religion Listserv – 2016 Dillon.
Sacred and Legendary Art volume II by Mrs. Jameson.
A Handbook of Christian Symbols and Stories of the Saints as Illustrated in Art by Clara Erskine Clement.
The Saints in Art with Their Attributes and Symbols, Alphabetically Arranged by Margaret E. Tabor.
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.
Nihil sub sole novum 
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