13 August – Saint Hippolytus & Saint Concordia

San Lorenzo fuori le mura
Saint Hippolyte Triptych by Dieric Bouts, also
Communion of Concordia and Hippolytus, Iglesia de San Hipólito el Real (Támara de Campos)

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Sanctorale Catholicum

Dictionary of Saintly Women

Lives of the Saints by Alban Butler.

Lives of the Saints by Francis Weninger.

Lives of the Saints by Sabine Baring-Gould.

Character Calendar 

Victories of the Martyrs by Saint Alphonsus Liguori.

The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.

La vie des saints

Medieval Hagiography

BHL, Supplement 

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

Prudentius, Peristephanon (?)

The Golden Legend (and illustrations)

Breviarium RomanumLatin.

Art & Architecture

Index of Medieval Art – Hippolytus & Concordia

Catalogo generale dei beni culturali (filtering needed)

BeWeB

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Warburg Institute Iconographic Database 

Guide to Christian Iconography: Images, Symbols, and Texts 

Vatican Colonnade 

Iglesia de San Hipólito el Real (Támara de Campos)

15C Sculpture

19C Sketch 

Post-Biblical Saints Art Index

Saints and their Attributes

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.

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

Cantus: A Database for Latin Ecclesiastical Chant

13 August – Saint Cassian of Immola

Annus Dierum Sanctorum
Aversio parvulorum interficiet.
The turning away of little ones shall kill.
Proverbs 1.32
Sagittae parvulorum factae sunt plagae.
The arrows of children are wounds.
Psalm 63.8

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Lives of the Saints by Alban Butler.

Lives of the Saints by Francis Weninger.

Lives of the Saints by Sabine Baring-Gould.

Character Calendar

Light from the Lowly volume II by Francis Butina.

Short Instructive Sketches from the Lives of the Saints 

The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.

Medieval Hagiography

BHL, Supplement 

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

“The Passion of St. Cassian of Forum Cornelii” in the Liber peristephanon of Prudentius.

Art & Architecture

Index of Medieval Art

BeWeB

Guide to Christian Iconography: Images, Symbols, and Texts 

Kornbluth Photography Historical Archive

San Cassiano, Venice

Post-Biblical Saints Art Index (not John Cassian)
Saints and their Attributes

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.

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.

13 August – Saint Radegund of Wellenburg

When Blessed Radegunda came to the sick man, the Lye became milk and the Streht became lard
Annus Dierum Sanctorum
Sit eleemosyna tua in abscondito.
Thy alms may be in secret.
Matthew 6.4
Manuum suam aperuit inopi et palmas suas extendit ad pauperem.
She hath opened her hand to the needy, and stretched out her hands to the poor.
Proverbs 31.20

Modern Hagiography

Bibliotheca Sanctorum

Dictionary of Saintly Women

Medieval Hagiography

Acta Sanctorum

Art & Architecture

Warburg Institute Iconographic Database (mixed with Saint Radegund of Poitiers)

16C Coin

Fresco in the Katholische Pfarrkirche St. Martin in Zusamaltheim

Painted Cycle in the Church of Saint Radegund in Waldburg, Wikimedia Commons

Saints and their Attributes

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.