1. University of Pennsylvania, Ms. Codex 1559 DS ID: DS1411 Title: Scale of perfection Author: Walter Hilton Place: Italy Date: 1510.
2. Cornell University, Archives 4600 Bd. Ms. 39 DS ID: DS12136 Title: Quodlibeta Author: James of Viterbo Place: Italy and Fabriano Date: 14th century