1. Papilloma of the Larynx, Trachea and Left Bronchus in a Child;Patterson;Trans. Amer. Bron. Sac.,1939
2. Orton, H. B.: Papilloma of Bronchus. Trans. Amer. Bron. Soc., p. 25, 1932.
3. Two Benign Growths Removed by Bronchoscopy;Zamora;Jour. Laryngol. and Otol.,1931
4. Three Bronchoscopic Cases;Syme;Jour. Laryngol. and Otol.,1927
5. A Case of Multiple Papillomata of the Larynx with Aerial Metastases to the Lungs;Hitz;Amer. Jour. Path.,1932