1. University of Chicago, Codex Ms. 181 DS ID: DS16733 Title: Alphabet and Canon law text Author: Albericus de Rosate Date: 1399.
2. Newberry Library, VAULT Wing MS ZW 141 .481 DS ID: DS18230 Title: Alphabet Place: Italy Date: approximately 1480
3. Newberry Library, VAULT folio Wing MS ZW 141 .46 DS ID: DS18233 Title: Alphabet Place: Italy Date: approximately 1460