I received emails on 3 famous or infamous guns up for auction:
Butch Cassidy's Colt .45:
http://www.colt45auction.com
Bonnie Parker's .38 Special:
http://www.rrauction.com/bidtracker_detail.cfm?IN=37
Barrow's 1911 Colt:
http://www.rrauction.com/bidtracker_detail.cfm?IN=38
Those would be some neat guns for a collection! There's a bunch of other historic guns on that auction right now also.