1. Lectures on general anaesthetics in dentistry;DeFord,1912
2. Researches, chemical and philosophical, chiefly concerning nitrous oxide or dephlogisticated nitrous air and its respiration;Davy,1800
3. Man against pain, the epic of anesthesia;Raper,1945
4. American Dental Association. Transactions of the Fourth Annual Meeting. Niagara Falls, July 26, 1864.
5. American Medical Association. Transactions of the Twenty-First Annual Meeting. Washington, DC, May 3, 1870.