So sad, but not unexpected. Many of our heroes of the past are reaching that age where they must inevitably pass on. I bought my first "real" racing bike (frame only) from him at Bicyclesport around 1975. It was a Wes Mason frameset, and I built it up from the parts I could afford at the time. Mostly mid-high end Japanese (First gen Crane, SunTour, Sugino) with red label rims and tubulars. I was pretty excited though when I got "real" campagnolo shift levers - the only Campy that was in my price range. Mike's shop was a cool place to go even if it was almost an hour away....
RIP.