1. University of Pennsylvania, Misc Mss (Large) Box 1 Folder 18 Title: In Evangelium Iohannis tractatus Author: Catholic Church Date: [between 1450 and 1499].
2. University of Pennsylvania, Misc Mss (Large) Box 1 Folder 17 Title: In Evangelium Iohannis tractatus Author: Catholic Church Date: 1400s.
3. University of Pennsylvania, Misc Mss (Large) Box 1 Folder 19 Title: In Evangelium Iohannis tractatus Author: Catholic Church Date: [between 1150 and 1199].
4. University of Pennsylvania, Misc Mss (Large) Box 1 Folder 15 Title: In Evangelium Iohannis tractatus Author: Catholic Church Date: ca. 1150-1175.
5. University of Pennsylvania, Misc Mss (Large) Box 1 Folder 16 Title: In Evangelium Iohannis tractatus Author: Catholic Church Date: between 1275 and 1299.