brother served as chief surgical consultants for the U.S. Army. Commissioned a colonel in 1917, in 1921 he was commissioned brigadier general in the Officers' Reserve Corps of the U.S. Army, and subsequently held rank as brigadier general in the Army Medical Department (from 1926) and as brigadier general in the Auxiliary Army of the United States from 1931. From 1919 to 1936, when he retired, he was a member of the Senate of the University of Minnesota and professor of surgery in the UMN medical school. Charles H. Mayo was engaged in numerous civic organizations. He was a professor of surgery at the University of Minnesota, active there and nationally in both Alpha Kappa Kappa and Sigma Xi fraternities. Personal life Charles Mayo's wife was Edith Graham, of Rochester, MN, whom he married in 1893. He belonged to the Episcopal church, and was a Freemason and member of Rochester Lodge #21 of the Grand Lodge of Minnesota, AF&AM, a Knight Templar, Scottish Rite Mason and Shriner, a Kiwanis, and was active in numerous other professional, civic and social clubs. Mayo retired in 1930 and died of pneumonia in 1939 in Chicago, Illinois. His two sons Charles William Mayo and Joseph Graham Mayo both worked at the clinic. Joseph Graham Mayo was killed in November 1936 in an accident when a train hit his car killing him and his hunting dog, Floosie. Mayo and his dog were buried in the same casket. A grandson, Charles Horace Mayo II, served a residency at the clinic. Recognition Mayo received numerous distinctions both during and after his life: Army Distinguished Service Medal (1920) Officer of the Legion of Honour of France (1925) Officer of the Order of Public Instruction (Golden Palms) of France (1925) Officer of the Order of Arts and Letters of France (1925) Commander of the Order of the Crown of Italy (1932) The United States Postal Service released a stamp on September 11, 1964, depicting Charles Horace Mayo and his brother. References Further reading Clapesattle, Helen. The Doctors Mayo, University of Minnesota Press (1975). External links Mayo Clinic History 1865 births 1939 deaths American surgeons People from Rochester, Minnesota Feinberg School of Medicine alumni Mayo Clinic people Deaths from pneumonia in Illinois Physicians from Minnesota Recipients of the Distinguished Service Medal (US Army) American military personnel of World War I Brigadier generals American Freemasons University of Minnesota faculty Presidents of