Career
He was the last pick in the 1942 NFL Draft. Clarkson was a two-time Little All-American at Texas Agricultural and Industrial University (now Texas Agricultural and Mechanical-Kingsville), 1938 and 1939. He was posthumously named to the Texas Agricultural and Mechanical-Kingsville Football Hall of Fame, 1972, and was named to the Texas Agricultural and Mechanical-Kingsville Football Team of Century in 2000.
Following his tenure with the Chicago Bears, Clarkson was line coach and player for the Winnipeg Blue Bombers of the Canadian Football League from 1952 to 1953.
From 1943 to 1945, Clarkson served with the United States Army in England, France and Germany. On June 6, 1944, Clarkson was part of the American forces landing at Utah Beach, Normandy, France.
On October 26, 1957, while coaching during a game for the Sugar Land (Texas) High School football team, Clarkson suffered a heart attack and died on the side of the field Sugar Land went on to beat Hitchcock High, 25-0.
He was the father of American lawyer (and now United States Bankruptcy Judge) and documentary photographer Scott C. Clarkson.