Here are some of Fat Nick's favourite links to other sites that cover bike racing in general, and track racing in particular - and to a few sites that are generally of interest to cyclists.
I often get asked about books about track racing, and particularly about six-day bike races.
A couple of my personal favourite books on 6 day racing are:
De Mannen van de Nacht, by Roger de Martelaere. Roger is an experienced Belgian sports journalist, and a leading authority on six-day racing. My copy dates from 2000, and the ISBN is 90-74128-67.
A more recent publication is The six-day bicycle races, by Peter Joffrey Nye with Jeff Groman and Mark Tyson. This book was published in 2006, ISBN 1-892495-49, and you can get a sneak preview of the book on their website, which also has some wonderful old photos of six-day racing.
Both books are packed with old photographs, race results, and bios of six-day racers over the years. I can highly recommend both of these books on six-day racing.