1. Newberry Library, VAULT Case MS 55.5 DS ID: DS17930 Title: De ludo scachorum Author: Jacobus de Cessolis Place: Flanders Date: between 1450 and 1478
2. Newberry Library, VAULT Case MS 55.5 DS ID: DS17966 Title: Sophologium Author: Jacques Legrand Place: Flanders Date: between 1450 and 1478