Earliest Appearances
The t.v. appearances show him in a 1971 show. The bio for Cromwell indicates that he began acting at a later date. But I'm certain that I saw him in a minor role in an episode of Johnny Staccato that would have been filmed 15 years earlier. He was playing the role of a beat poet reading his poem in the background while Cassavettes carried on a conversation with another actor.
Does anyone know about this or where I might contact him to confirm that appearance?