The caduceus in the logo devised for the 1775--1975 bicentennial of the Army Medical Department.
D004616:Emblems and Insignia / Q000266:history*; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008887:Military Medicine / Q000266:history*; D014481:United States