The newest edition to the tradingpithistory print series is "Hand Signals of the New York Trading Pits" by Mike Nudelman and will be printed up soon in Chicago by Dan Grzeca. All the handsignals were based upon those used at the NYMEX and was developed w/the assistance of an options trader who is currently on the trading floor. It will be listed in the shop soon for preorders although printing will be a little bit into the future.