Nice. Tomita gave the original identical pamphlet last week when I was in Tokyo. Understand, when reading it, that it is essentially propaganda justifying the sport of Keirin (i.e., the gambling). He also gave me a much larger publication (like 25 pages) that is the Keirin racer's how-to manual. It covers everything from hub overhaul and hub-lacing to bike fit to how to land in a crash. It's an excellent resource. Unfortunately it is in Japanese. I know it has this stuff in it because of the helpful pictures.
The curator of the bicycle museum in Tokyo is a friend of Tomity's, and when we went there he gave me two VHS tapes covering the history of Keirin. I haven't watched these, but I expect they will also be kinda neat.