Maybe this is it?
Oct. 8 - 11 - AACA Eastern Division National Fall Meet - Antique Auto Museum, 161 Museum Drive, Hershey, PA, 717-566-7100. The show is considered one of the largest antique automobile shows and flea markets in the United States.
It consists of over 9,000 flea market spaces, over 1,000 car corral spaces, and approximately 1,500 show cars. Each year the show attracts visitors from all over the United States and many countries throughout the world. Some of the most unusual cars and parts can be found.
http://www.aaca.org/Calendar/Default.aspx
