7 January – Saint Valentine of Passau

Das St. Galler Versuchungsretabel
Valentinsaltar in St. Valentin (Unterföhring)
Saints Valentine, Stephen, and Maximilian, the Patron Saints of Passau
Merano, chiesa di San Valentino – Statua san Valentino
Bavaria Sancta, Augsburg, Staats- und Stadtbibliothek — 2 Th L 65

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Lives of the Saints by Sabine Baring-Gould.

Medieval Hagiography

BHL, Supplementum

Acta Sanctorum

Art & Architecture

Index of Medieval Art

Europeana

Wikimedia Commons

Medieval Religion Listserv

A Guide to Christian Iconography: Images, Symbols, and Texts

St. Valentin (Merano)

Saints and their Emblems

Music

Cantus: A Database for Latin Ecclesiastical Chant