"Smart Money" by Michael Konik. A great quick read about syndicate sports betting from a runner's point of view. It is crazy the amount of money these guys put on games and how they are chasing around town looking for the best number. Also it goes to show how much of a pussy vegas can be with taking bets.
"The Odds". A book on betting stories of a young kid, a bookmaker, and Alan Boston during college basketball. An easy read. Great book.