Gregory IX, Pope, approximately 1170-1241, “Decretales cum glossa [folium 81],” Digital Collections, accessed December 12, 2025, https://digitalcollections.library.gvsu.edu/document/40098.
One leaf from Decretales cum glossa by Pont. Max. Gregorius IX. Printed in Basel by Michael Wenssler on March 15, 1482. Illustrated with red and blue rubricated initials. [ig00454000]