Stamp recognition for William Morton.
D000776:Anesthesiology / Q000266:history*; D004986:Ether / Q000266:history*; D005019:Ethyl Ethers / Q000266:history*; D049672:History, 19th Century; D010678:Philately; D013019:South Africa; D014481:United States
D005019:Ethyl Ethers; D004986:Ether