William Crawford Gorgas and the American Medical Association.
D000574:American Medical Association / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008887:Military Medicine / Q000266:history; D010177:Panama Canal Zone; D010678:Philately; D014481:United States; D015004:Yellow Fever / Q000266:history*