First, I'm not sure if I'm proposing a book discussion group -- open to suggestions on how people want to interact, if at all. But I am shilling for what looks like a really interesting read: Six-Day Races: America's Jazz-Age Sport. Here's the Amazon blurb:
One of the authors, Seattle-ite Jeff Groman, is a real cycling historian, runs Classic Cycles on Bainbridge Island, and has a collection of bikes at the nearby Bicycle Museum. He also lives next door to a good friend of mine. Anyway, the book is on my list, as soon as Pete gets sends me a copy for my birthday.