1. Letheon: The Cadenced Story of Anesthesia;Leake,1947
2. Etymology of Letheon: nineteenth-century linguistic effervescence;Haridas;Anesthesiology,2019
3. Insensibility during surgical operations produced by inhalation;Bigelow;Boston Med Surg J,1846
4. Warren E. Some Account of the Letheon; Or, Who was the Discoverer? [1st ed.] Boston: Dutton and Wentworth; 1847:38.
5. Warren E. Some Account of the Letheon; Or, Who was the Discoverer? 2nd ed. [First issue] Boston: Dutton and Wentworth; 1847.