Archivo General de la Nacion (Mexico), Ramo de Inquisicion, Vol. 40, Exp. 12 Folio 82r, image courtesy Professor John Chuchiak IV.
September 10, 2012 1:00 PM
Included in the trial records is a list of books Calderon was found with. The most puzzling material was a group of archival letters written in a special cipher that Calderon claimed to be able to read, no one else could.