Lives of the Saints by Alban Butler.
Lives of Saints by Francis Weninger.
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.
Miniature Lives Of The Saints For Every Day In The Year by Henry Sebastian Bowden.
Stories of the Saints for Children: The Black Letter Saints by Mrs. Molesworth.
Stories of the Saints Fourth Series Saints of the Early Church by Mary Seymour.
Memorials of the Blessed: A Series of Short Lives of the Saints by Charles B. Fairbanks.
Contemporary & Medieval Hagiography
There is a Life of Ambrose by Paulinus Nola and a 1928 translation, but it is only available in a recent print publication. (it should be in the public domain, but it is not yet available). Here it is in Latin in a 15th-century manuscript. You can listen to a reading of a section of the life here, with mostly relevant images.
Writings by Ambrose
Saint Ambrose: Theological and Dogmatic Works from the Fathers of the Church.
You can also read about Ambrose and their relics in Saint Augustine’s Confessions (scroll down to 9.7).
The Church of Sant’Ambrogio in Milan
The Church of Sant’Ambrogio in Milan, originally constructed by Saint Ambrose and his eventual resting place, contains several images of Saint Ambrose.
The earliest image is in a side chapel dedicated to Saint Vincent, called the Chapel of San Vittore in Ciel d’oro. Ambrose died in 397, and the mosaics in this chapel date to fifth century. It is not a contemporary portrait, but in the grand scheme of the Middle Ages, it seems very nearly.
The teacher or an older student may read more about the Chapel of San Vittore in Ciel d’oro, either now or on the feast day of Saint Vincent, here and here (you may read this free online by setting up an account).
From the ninth century, the Golden Altar in Sant’Ambrogio presents a cycle of Christ’s life in gold on the front and a cycle of Saint Ambrose’s life in silver on the back. The most accessible information comes from the entry about it on the Italian Wikipedia website. Within Chrome, right click on any blank area in the page, and select “Translate to English.” The teacher or older students interested in art history may read more here.
The Ottonian ciborium over the altar preserves on one of its four sides a relief of Saint Ambrose with Saints Protasius and Gervasius, but I am still looking for a good image of this side. Likewise, the later medieval mosaic in the apse shows scenes from the life of Saint Ambrose, but good photographs are a challenge to find.
Art & Architecture
Sacred and Legendary Art volume I by Mrs. Jameson.
A Handbook of Christian Symbols and Stories of the Saints as Illustrated in Art by Clara Erskine Clement.
The Saints in Art with Their Attributes and Symbols, Alphabetically Arranged by Margaret E. Tabor.
Sacred Symbols in Art by Elizabeth Edwards Goldsmith.
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.
To Saint Ambrose is attributed the hymn Veni redemptor genium (the words in Latin, scroll down for a list of all the versions in English; the German hymn; chant – contemporary beat – from Advent at Ephesus).
Manna for the Soul: Meditations for Every Day of the Year by Paulo Segneri.