Hi Chaps,
I have started a website recording the earliest of Yamaha road racing history.Starting with their first dedicated works racing 250cc's that trounced Honda in the 1957 Asama Race, the bikes which were later revamped for the 1958 Catalina GP in the USA and subsequently campaigned by Sonny Angel, who later raced the first (later model) Yamaha in the UK.
I was lucky enough to be given the authority to use many photo's from Sonny Angel's collection, as I am currently restoring one of these first 1957 Yamaha's.
I hope you find it interesting !
All the best
Richard