For those of you who had a chance to attend the Great Train Expo in Louisville, KY last weekend, thank you.  The promoters estimated the total attendence to be around seven to eight thousand.  For us, the Radcliff Model Railroad Association, the event was a big success.  There were crowds of children of all ages around our three layout displays (On30 8' x 16', HO modular 12' x 75', T-Trak 30" x 12') from the time the doors opened in the morning of the first day to the time they closed at the end of the second day.  I'm sure the venders were