There is one on ebay now:
http://ebay.com/
or item 7113955179
Angel Garcia Long Valley, NJ
> Tim Isaac made very few bikes under his own name. Certainly well under
> 1000. Most were built in Denver CO. He started out working by himself
and
> later had a helper named Jock. I can't remember Jock's last name. Jock
> died prematurely from a heartattack after a bike race. This had a
profound
> effect on Tim's decision to get out of building under his own name and
> securing employment with the fledgling company Trek. Tim's frames were
well
> made and most were built with fastback seat stays with a hidden binder
bolt.
> Tim used to be an employer of mine and remains a pal. Tim also was an
> accomplished bike racer.
>
> Curt Goodrich
> Minneapolis, MN