[CR] vintage bicycle event in Portland, OR

Hi all, I'm a new member with an early-80s Peugeot AO8 Sport. As part of the Mt. Tabor Centennial Celebration, there will be an antique & classic bicycle gathering on Aug. 6. Details are still being planned, but we'll be meeting at the top of Mt. Tabor at 10:30 Sunday morning. Around midday, there will be a parade/ride for participants, perhaps ending at the Horse Brass Pub. Do any of you know of vintage bicycle clubs or people who might want to help out? I heard a reference to the Cascade Classic Clunkers but can't seem to find any more info. Please let me know if you have any ideas or suggestions for the event. More details are at http://www.mttabor100.org/events.html. It would be wonderful if some of you could come out!
Cheers,
Oliver Smith
Portland, Oregon, USA