31. Free Library of Philadelphia, Lewis T384 DS ID: DS18394 Title: Scientific texts Place: undetermined Date: 1200-1400
32. Free Library of Philadelphia, Lewis T394 DS ID: DS18404 Title: Medical text Place: undetermined Date: 1200-1300
33. Free Library of Philadelphia, Lewis T397 DS ID: DS18407 Title: Philosophical text Place: undetermined Date: 1200-1400