Sive manducatis sive bibitis, omni in gloriam Dei facite.
Whether you eat or drink, do all to the glory of God.
1 Corinthians 10.31
Modern Hagiography
Lives of the Saints by Alban Butler.
Lives of the Saints by Sabine Baring-Gould.
Miniature Lives Of The Saints For Every Day In The Year by Henry Sebastian Bowden.
Sur les traces de Marie d’Oignies et du Prieuré St-Nicolas
Contemporary Hagiography
The Earliest Life of Blessed Marie by Jacques de Vitry (in English, here in Latin).
Art & Architecture
Europeana (also search with Marie and Maria for additional results)
Warburg Institute Iconographic Database
La châsse de Sainte-Marie d’Oignies, Wikimedia Commons, BALat
The Saints in Art by Joseph Maria von Radowitz.
Nihil sub sole novum 