4 September – Saint Marcel de Chalon

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum

Roman Martyrology

Lives of the Saints by Alban Butler.

Lives of the Saints by Sabine Baring-Gould.

La vie des saints

Medieval Hagiography

BHL

Acta Sanctorum, translation

The Cult of Saints in Late Antiquity Database

Art & Architecture

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Saints and their Attributes
Saints and their Emblems
Saints and their Emblems

Caractéristiques des saints dans l’art populaire by Charles Cahier – arbre, fosse.

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

Medieval Music Database

Cantus: A Database for Latin Ecclesiastical Chant

3 September – Saint Seraphia

Annus Dierum Sanctorum
Non omnes capiunt verbum hoc.
All men take not this word.
  Matthew 19.11

Modern Hagiography

Bibliotheca Sanctorum

Roman Martyrology

Dictionary of Saintly Women

Lives of the Saints by Francis Weninger.

Character Calendar 

Pictorial Lives of the Saints

Our Birthday Bouquet Culled from the Shrines of the Saints and the Gardens of the Poets by Eleanor C. Donnelly.

Victories of the Martyrs by Saint Alphonsus Liguori.

Medieval Hagiography

BHL, Supplement

Acta Sanctorum, translation (29 August)

The Cult of Saints in Late Antiquity Database

Art & Architecture

Décollation de sainte Sérapie (France, Valenciennes. Bibliothèque municipale, Ms. 838 f. 105v)

Saints and their Attributes
Saints and their Emblems

Caractéristiques des saints dans l’art populaire by Charles Cahier – ange, groupe, torches.

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.

See 29 August – Saint Sabina.

3 September – Saint Pius X

Trainini V. (1919), Papa Pio X

Modern Hagiography

Bibliotheca Sanctorum

Martyrologium Romanum (21 August)

Eucharistic Lilies: Youthful Lovers of Jesus in the Blessed Sacrament by Helen Maery.

A Visit to His Holiness Pope Pius X 

Saint Pius X: A Pictorial Biography 

Cathedral Basic Readers

Tradition in Action

Writings of Pope Pius X

Documenta Catholica Omnia 

Vatican Site for Writings of Pope Pius X 

The Encyclical of Pope Pius X on the Doctrines of the Modernists 

The Catechism of Pope Pius X 

Oath against Modernism 

Syllabus Condemning the Errors of the Modernists 

Art & Architecture

Statue in San Pietro in Vaticano 

Catalogo generale dei beni culturali

BeWeB

Music

Music Composed by Pope St. Pius X