11. Newberry Library, VAULT folio Case MS 95 DS ID: DS17792 Title: De vita solitaria Author: Petrarch Place: Lombardy Date: between 1425 and 1464
12. Newberry Library, VAULT Wing MS ZW 1 .45 DS ID: DS18237 Title: Prose and Verse Author: Dante Alighieri and Petrarch Place: Italy Date: approximately 1450