1. Free Library of Philadelphia, Lewis E 2 Title: De consolatione philosophiae Author: Albertus Magnus and Boethius Place: Germany Date: 1400-1499
2. Free Library of Philadelphia, Lewis E 235b Title: Treatise on grammar Place: Istanbul Date: 1400-1450
4. Free Library of Philadelphia, Lewis T136 Title: Treatise on grammar Place: undetermined Date: 1000-1500
6. Free Library of Philadelphia, Lewis T201 Title: Treatise on grammar Place: undetermined Date: 1000-1500
7. Free Library of Philadelphia, Lewis T202 Title: Treatise on grammar Place: undetermined Date: 1000-1500
8. Free Library of Philadelphia, Lewis T203 Title: Treatise on words Place: undetermined Date: 1000-1500