According to a February 13, 1960 article in Newsday, John was one of around 200 investors (mostly from the theatrical world) in a new ski resort named Hunter Mountain Ski Bowl.
Played Knight Escavalon in "The Lovers" at the Martin Beck Theatre in 1956.
Appeared in the play "A Gift of Time" at the Ethel Barrymore Theatre in 1962.
Played a cab driver in "Under the Yum Yum Tree" at the Henry Miller's Theatre in 1960/61.
Played two roles in the play "The Borstal Boy" at the Lyceum Theatre in 1970.