1. University of Pennsylvania, LJS 184 DS ID: DS133 Title: Etymologiae Author: Isidore of Seville Place: Catalonia Date: between 1265 and 1299
2. University of Pennsylvania, LJS 216 DS ID: DS136 Title: Sphaera mundi Author: Johannes de Sacrobosco Place: Paris and France Date: between 1256 and 1270