281. University of Pennsylvania, Ms. Coll. 742 Folder 23 DS ID: DS1841 Title: Terms of payment Author: Tengoccio d'Enea de Piccolomini Date: 1387.
282. University of Pennsylvania, Ms. Coll. 742 Folder 24 DS ID: DS1842 Title: Claim Author: Fazio de Piccolomini Date: 1392.