1. University of Pennsylvania, Misc Mss Box 4 Folder 2 DS ID: DS801 Title: Miscellany Author: Catholic Church and Leo X Date: after 1520.
2. University of Missouri, RARE RES D221.C3L4 1517 DS ID: DS10313 Title: Papal bull Author: Leo X Place: Italy Date: 1517, March 27; s. XVI(1/4); 1500-1525