Bill Blackburn (Star Trek TOS) address requested

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Does anyone have an address for Bill Blackburn, born William R. Blackburn, that was on Star Trek TOS?
He started out as an actor then moved on to costume/wardrobe.

Trivia:Was an uncredited extra in most episodes of the original "Star Trek". Frequently played Lt Hadley, seen on the bridge, or walking around the halls of the Enterprise, but he could and did turn up in any other available extra role, sometimes in costumes which fully obscured his face. He also did minor stunts on the show. All his parts were non-speaking.