UPCOMMING BIKE SWAP MEET INFO (many repeat yearly around the same time):

Every September is the Portland, OR / Vancouver WA area's Annual Allan Shurman Iron Ranch Bicycle Swap and Whizzer Meet
23100 NE 10th Ave. Ridgefield, WA, 98642
Take the 219th St Exit off I-5, head north on NE 10th to the Iron Ranch

Below is one of the older posters.

Swap Meet Poster

Seattle Bike Swap

Below are scenes from the annual Old Bike Swap Meet at the Kent National Guard Armory