Billy left the UK for the US about 20 years ago, but returned about 12 months later. Last place I'm aware he was working was Walvale Cycles in Walton Vale Liverpool. I've been in touch with someone who used to work with Billy in Walvale and they are trying to find out his whereabouts through friends of theirs.
billy whitcomb used to be apprentice to Harry Quinn in the late 60's and seventys, even after Frank Clements took over the company, I think he taught Terry Dolan as well.
he then set up building frames from his house in liverpool and later near wrexham again with Harry quinn
All my Ron Kitching and Jaques Anquitil cyclo cross frames were built by Harry Quinn/Bill whitcomb and then painted by Geoff Clarke in bradford
would love to get in touch with him again if he still is in liverpool but think he left the uk ???