Did you ever find any Marty Burke recordings? I lived in Michigan when Marty and was connection with s.f. fandom when Marty was performing in Dearborn. I have half a dozen CD's from his live performances. They were recorded on tape from his live performances, rerecorded on tape, and then to CD's twice. They aren't bad considering. I am thinking of having them restored, although still on CD's.
Dale Yeo
y.dale43@gmail.com