Memorial Day weekend (Fri, Sat, & Sun) is a good sized swap meet at Springfield, Ohio. Actually it is at the County Fairground just east of town on I-70. They advertise in Hemmings and Cars & Parts for additional information. They have 900 vendors using 2,200 sites both inside and outside. The last two year have had 1,000 cars in the car corral. Both Fri & Sat are large attendance and from 9:30 to noon the cars will be backed up on the interstate waiting to get off. I plan to arrive about 8:30 for ease of entry. I would estimate about 80% of the vendor spaces are people with old parts.