Mus prepared for Princeton at Montclair (N.J.) High School, where he was on the football and track teams. At Princeton, he majored in politics. He was manager of the varsity soccer team and played on the intramural soccer team, winning the championship for two years. He was a member of Cloister Inn.
After graduating from Princeton, Mus served in the Army from 1943 until 1946. While still in the Army, he married the love of his life, Margaret Keeler, and they immediately started a family.
He spent many years working for Metal Lithographing in Warren, N.J. In 1986, Mus and Margaret retired to New London, N.H., where they enjoyed an active, though peaceful, life on the lake. In New London, Mus helped establish the local Habitat for Humanity and was active in several environmental and social efforts.
He loved bicycling and spent many years sharing a tandem with his wife. Just last year, he rode with his sons in several local cycling charity events.
He is survived by his wife, Margaret; children Linda, Jeff, Betsy, Jimmy, John, and Michael; eight grandchildren; and two great-grandchildren.