1. Fordham University, Special Collections 1612 2 DS ID: DS26242 Title: Gradual Place: France and Switzerland Date: s. XV; 1400-1499 and s. XIII; 1200-1299
2. Newberry Library, VAULT oversize box Case MS Fragment 57 DS ID: DS18334 Title: Gradual Author: Catholic Church Place: Switzerland Date: appoximately 1400