It is great footage albeit lo-res on the net. You can pick up this original copyrighted VHS video set of 1960s/70s racing very reasonably via the publishers 'Porter Publishing' at their e-bay shop.
http://stores.ebay.com/Porter-Publis...QQftidZ2QQtZkm
This was originally the first half of the tape 'Motor Racing 60's style 1967 & 1960'.