1. Harvard University, MS Span 59 DS ID: DS11144 Title: Regula Author: Cofradía de Nuestra Señora de las Nieves (Valladolid, Spain) Date: 1551-1632.
2. Newberry Library, VAULT Wing MS ZW 1 .4be DS ID: DS18255 Title: Regula Author: Cassinese Congregation Place: Italy Date: approximately 1510