1. Notecard accompanying inhaler, Anaesthetic Department, Addenbrooke’s Hospital.
2. Parturition without pain;Townley;Lancet,1862
3. America’s first patented series of bubble-through anesthetic vaporizers;Bause;Anesthesiology,2009
4. Account of a New Anaesthetic Agent, as a Substitute for Sulphuric Ether in Surgery and Midwifery;Simpson,1847
5. Robinson’s inhaler;Matthews;Lancet,1847