"TT" means tourist trophy.  The idea of this kind of motorcycle race was brought over to the states after WWII.  So, since 1947, there has been the Peoria TT sponsored by the Peoria Motorcycle Club.  The AMA Grand Nationals were held on August 14 on this dirt flat track with pros from around the country.  While the racing was cool, the crowd and especially the kids were great to watch.  It is a true subculture of flattrackers.  The night before, the Galesburg Motorcycle Club conducted races at its home track out in the middle of BF Illinois.  Here are some pics from both events.