1. University of Pennsylvania, Ms. Coll. 764 Item 181 DS ID: DS2001 Title: Papal brief Author: Leo X Date: 1516.
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