nick the cut, sorry to be the one to inform you, but Sheldon Passed away Feb 4 2008.
He sure was a huge influence on me and collecting cycles.
That guy had the answer for everything. his website is the best reference site for anything and all things relating to the mechanics and a lot of the history of bicycles. i never met him, but i have read most everything he has published on the internet. I wish i could have met him.
http://en.wikipedia.org/wiki/Sheldon_Brown_(bicycle_mechanic)