title: A. L. Parker's broadside: laughing "gas" for Littleton.
mesh_terms: D000329:Advertising / Q000266:history; D018685:Anesthetics, Inhalation / Q000266:history*; D006665:History of Dentistry; D049672:History, 19th Century; D006801:Humans; D009609:Nitrous Oxide / Q000266:history*
chemical_list: D018685:Anesthetics, Inhalation; D009609:Nitrous Oxide