Six feet tall and the son of British immigrant John Catto of Dallas, Texas, Charles Gray Catto was studying medicine at the University of Edinburgh in Scotland when the war began. Against the wishes of his parents, he joined the Royal Flying Corps on 5 June 1917. Flying the Sopwith Camel with 45 Squadron, Catto served in Italy and France and scored 6 victories. When the war ended, he resumed his studies at Edinburgh, graduated in 1922, and became a doctor. He was elected mayor of Waco, Texas on 20 April 1937.
The Dallas Morning News, Dallas, Texas, Friday, 28 June 1918, page 8
The Dallas Morning News, Dallas, Texas, Sunday, 5 February 1922, page 15
The Dallas Morning News, Dallas, Texas, Wednesday, 21 April 1937, page 3