Modern Hagiography
Lives of the Saints by Sabine Baring-Gould.
Medieval Hagiography
The Cult of Saints in Late Antiquity Database
Art & Architecture
Caractéristiques des saints dans l’art populaire by Charles Cahier – chien.
25 March – Saint Dula
25 March – The Annunciation
Dies Domini
The day of the Lord
Isaiah 2.12
Respexit humilitatem Ancillae Suae.
he hath regarded the humility of his handmaid;
Luke 1.48
Modern Mariology
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
The Liturgical Year by Dom Guéranger.
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.
Sermons for Children’s Masses, According to the Sundays and Principal Festivals of the Year by Raphael Frassinetti.
Original, Short and Practical Sermons for Every Feast of the Ecclesiastical Year : Three Sermons for Every Feast by Francis Weninger.
Goffine’s Devout Instructions on the Epistles and Gospels for the Sundays and Holydays
The Lives of Saints, with Other Feasts of the Year, According to the Roman Calendar by Peter Ribadeneira.
“Annunciation Day” & “Annunciation Lilies” by Hugh Francis Blunt.
Biblical Text
Ancient and Medieval Mariology
A later tradition in Protoevangelium of James, but a source for details in many depictions of the Annunciation (scroll down to XI, incorrectly labeled as XL).
The Golden Legend (and illustrations)
Breviarium Romanum – Latin & English.
Art & Architecture
Catalogo generale dei beni culturali
POP : la plateforme ouverte du patrimoine
Warburg Institute Iconographic Database
A Guide to Christian Iconography: Images, Symbols, and Texts
Kornbluth Photography Historical Archive
Icon at the Monastery of Saint Catherine at Mount Sinai (scroll down, although its wonder cannot be captured with photography, slightly higher resolution here).
Annunciation at the Musei Capitolini
“The Annunciation Zoom into Giovanni del Biondo’s hybrid devotional panel”
At the Metropolitan Museum of Art
Legends of the Madonna as Represented in the Fine Arts by Mrs. Jameson.
The Gospel in Art by Albert Bailey.
Sacred Symbols in Art by Elizabeth Edwards Goldsmith.
Music
Cantus: A Database for Latin Ecclesiastical Chant, Eastertide
Dixit Maria by Hans Leo Hassler (missa super & motet)
Devotions
Novena for the Annunciation in the Raccolta
Meditations for the Use of the Secular Clergy by Pierre Chaignon.
Manna for the Soul: Meditations for Every Day of the Year by Paulo Segneri.
Meditations on the Life, the Teaching and the Passion of Jesus Christ for Every Day of the Ecclesiastical Year with an Appendix of Meditations for the Festivals of Various Saints by Augustin Maria Ilg.
Meditations for All the Days of the Year by M. Hamon.
The Church Seasons Historically and Poetically Illustrated by Alexander H. Grant.
Heortology: A History Of The Christian Festivals From Their Origin To The Present Day by Heinrich Kellner.
The Way of Salvation: Meditations for Every Day of the Year by Saint Alphonsus Liguori.
25 March – Saint Irenaeus of Sirmium
Modern Hagiography
Martyreologium Romanum (6 April)
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
Victories of the Martyrs by Saint Alphonsus Liguori.
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.
Miniature Lives of the Saints for Every Day in the Year
Medieval Hagiography
The Cult of Saints in Late Antiquity Database
Art & Architecture
Nihil sub sole novum 
