1. University of Pennsylvania, Ms. Coll. 742 Folder 19 DS ID: DS1836 Title: Petition Author: Carlo Blasii de Piccolomini Date: 1368-1371.
2. University of Pennsylvania, Ms. Coll. 742 Folder 33 DS ID: DS1852 Title: Petition Author: Simone di Nicolo Petroni Date: 1439.