1. University of Pennsylvania, LJS 194 Title: Geometry Author: Sylvester II Place: Austria Date: [between 1125 and 1175]
2. University of Pennsylvania, LJS 293 Author: Abu Bakr al-Hassar Place: Baghdad Date: A.H. 590 (1194)
3. University of Pennsylvania, LJS 37 Title: Elements Author: Euclid Place: Egypt Date: A.H. 502 (1108-1109)
4. University of Pennsylvania, LJS 384 Title: Philosophia mundi Author: William of Conches Place: Germany Date: [circa 1150]
5. University of Pennsylvania, LJS 459 Title: Secretum secretorum Place: Mosul Date: [between 1193 and 1211]
6. University of Pennsylvania, LJS 460 Title: Elements Author: Euclid Place: Egypt Date: A.H. 502 (1108-1109)
7. Free Library of Philadelphia, Lewis E 5 Title: De casu diaboli Author: Anselm of Canterbury Place: Rheims Date: 1150-1199
8. Free Library of Philadelphia, Lewis E 22 Title: Expositions on the psalms Author: Augustine of Hippo Place: Spain Date: 1150-1199
9. Free Library of Philadelphia, Lewis E 137 Title: Sentences Author: Isidore of Seville Place: Spain Date: 1100-1199
10. Free Library of Philadelphia, Lewis E M 16:13 Title: De noe et arca Place: Rhineland Date: 1100-1199