There's a web site that broadcasts live and recorded cycling video called http://cycling.tv . Unfortunately, I am not getting it to play video on my linux machine, but they do apparently have some classic racing footage:
Cycling.tv Classics: Coppi v Bartali (Free!) Highlights from the Giros of 1946,47 and 48, Milan San Remo 48 Classic Cycling / Historical Archive
Someone watch it and report back?
Morgan -- Morgan Fletcher, morgan@hahaha.org Oakland, CA