Petition to the Viceroy of the Kingdom of Aragón by the Colegio de Médicos y Cirujanos [i.e. Medical and Surgeons Board] of the city of Zaragoza opposing two petitions by the Mancebos Cirujanos that they be able to be employed as masters of surgeons and to distinguish between the trades of barber and that of surgeon, respectively. [Ca. XVII Century].