Modern Hagiography
Miniature Lives Of The Saints For Every Day In The Year by Henry Sebastian Bowden.
Medieval Hagiography
Barbara Newman, Thomas of Cantimpré: The Collected Saints’ Lives: Abbot John of Cantimpré, Christina the Astonishing, Margaret of Ypres, and Lutgard of Aywières (2008) (not in the public domain).
The Writings of Saint Lutgardis
The Heavenly Court of the Holy Cistercian Nun Saint Lutgarde of Brabant
Art & Architecture
Catalogo generale dei beni culturali
Warburg Institute Iconographic Database
“The Chair of Saint Lutgard: The Cult of a Medieval Object”
Dream of Lutgardis on Charles Bridge in Prague
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.
Nihil sub sole novum 