Gotcha added to the list! I used to live in Des Moines about 15 years ago.
Right near where the old drive-in movie theater used to be... well, swap meet, haha. Now it's a Home Depot I think.
Make sure you see this topic!
http://www.ft86club.com/forums/showthread.php?t=14794
Also, just added @
m_in_pdx to the list.