1. University of Pennsylvania, Ms. Codex 720 DS ID: DS1622 Title: Lectura super capitali Firmiter credimus Author: Konrad III. von Soltau Place: Bologna and Italy Date: 1388.
2. Newberry Library, VAULT Ayer MS 1275 no. 2 DS ID: DS17666 Title: Report Place: Mexico City Date: 1539 April 27.