It was only mentioned in Malia's book in passing, I asked Nancy about the character name when I found out about it. What it looks like he did was substitute for another actor for a few episodes. Yes, as far as I know, there is no existing footage. If it turned up on a kinescope someplace, the dollars it would bring! Another appearance he made prior to DS mentioned in some early magazine articles is the old Sunday morning show, "Look Up And Live". I was a bit surprised when he mentioned his "As The World" turn at the Fest.