1. Harry Ransom Center, -q- PA 3965 D4 A5 1531 copy 2 DS ID: DS12059 Title: Rationale divinorum officiorum Author: Guillaume Durand Place: Switzerland Date: 1350-1450
2. Free Library of Philadelphia, Lewis T509 DS ID: DS18460 Title: Theological text Place: Basel and Switzerland Date: 1470-1477