His one-man shows portrayed Harry Truman, FDR, and Will Rogers. During his lifetime, he received a Golden Globe Award and an Emmy Award.
He became a member of the secret society, Skull and Bones, while attending Yale University.
In 1977, he played Theodore Roosevelt in Bully.
His grandson, Matty Witmore, competed in Survivor: Gabon.
He was nominated for an Academy Award for Best Actor for his portrayal of former U.S. President Harry S. Truman in Give 'em Hell, Harry!
