18 August – Saint Agapitus of Palestrina

Aurélien et la pendaison de saint Agapit (France, Amiens. Bibliothèques d’Amiens Métropole, Ms. 108 f. 230)
Saint Agapit foulant aux pieds un hybride zoomorphe (France, Dijon. Bibliothèque municipale, Ms. 641 f. 021v)
Saint Agapitus of Praeneste in the Arena
Annus Dierum Sanctorum
Deus meus misit Angelius suum, et conclusit ora leonum, et non nocuerunt mihi.
My God hath sent his angel, and hath shut up the mouths of the lions, and they have not hurt me.
Daniel 6.22
The Book of Saints

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.

The Liturgical Year by Dom Guéranger.

Character Calendar 

Pictorial Lives of the Saints 

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

Art & Architecture

Index of Medieval Art

Catalogo generale dei beni culturali

BeWeB

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Warburg Institute Iconographic Database

Cattedrale di Sant’Agapito martire 

Painted cycle of martyrdom

16C Paintings of Martyrdom 

17C Sculpture 

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.

Music

Cantus: A Database for Latin Ecclesiastical Chant

17 August – Saint Mammes of Caesarea

The Flight of the Soldiers Sent to Capture Saint Mamas (also Saint Mamas before Aurelian)
Martirio di San Mamante
Morte di San Mamante
Saint Mammès venant se livrer au tribunal du gouverneur de la Cappadoce, de la tenture de l’histoire de saint Mammès (1544)
The Book of Saints

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Sanctorale Catholicum

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

La vie des saints 

La vie des saints

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.

Victories of the Martyrs by Saint Alphonsus Liguori.

Medieval Hagiography

BHL, Supplement 

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

Art & Architecture

Index of Medieval Art

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Wikimedia Commons

Medieval Religion Listserv – 2016 Dillon.

Vatican Colonnade 

Menologion of Basil II (about)

Saints Mamas and James on The Pistoia Santa Trinità Altarpiece 

Post-Biblical Saints Art Index
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.

Devotions

“Veneration” in Wikipedia Entry