Other
Oeuvre Notre Dame
Illustrated with drawings and photos, this multi-lingual site includes sections on history, discussion of architecture, repairs, a news bulletin, a glossary and a document database.
New Advent
Catholic Encyclopedia: Stained Glass
This article from The New Advent is not illustrated, but covers all the major topics in stained glass windows. Please note that "The Catholic Encyclopedia" is a historic reference source and should be viewed in the context of resource...