History - Laudes Crucis Attollamus
Jun 20, 2019 (tomjaw)
Adding further references.
remarks
From http://www.ccwatershed.org/media/photologue/photos/4897-laudes.jpg
The image above is from this book, Les proses d'Adam de Saint-Victor: texte et musique 1900.
Direct link, https://archive.org/details/lesprosesdadamd00aubrgoog/page/n285