1. Orthodontics, an historical review of its origin and evolution;Weinberger,1926
2. The emergence of man;Pfeiffer,1967
3. A history of dentistry from the most ancient times until the end of the eighteenth century;Guerini,1909
4. A historical sketch of orthodontia;Castro;Dent Cosmos,1934
5. De Medicina, Edition of Pincius for Fontana, Venice, 6 May 1497. Library #131881 (incunabula), College of Physicians, Philadelphia. For English translation see Foster EW. “Celcus”. Dent Cosmos 1879;21:235–41.