Does this swap still exist? Date for Sept.09? Can anyone attend? How do I get the details? I live up North am interested, if possible? I have many perennials to trade.

I haven't heard anything about a fall swap yet. I'd just stay tuned here on the MN forum and see what happens. I'll be pretty much swamped preparing for "Marigold Days" our local festival On Sept 11,12,13 then usually hope to get some digging/dividing done in the 3 weeks after that. I really do need to divide some daylilies and clumps of bee balm which are 'enthusiastic' growers in my yard. If I don't see anything about a fall swap I'll likely just cover the potted divisions for next year's spring swap which pretty much always happens. the other thing you could do is post the question re a fall swap here on the MN forum and that might start the ball rolling.
Mantorville is down by Rochester so that much farther for you and even 'out of range' for most folks around the twin cities or I'd host one myself.
If nothing comes up and you really need to divide perennials, let me know and I'll pass your email along to my sister in law. They just (2 years ago) built their dream home on a little lake just outside Duluth and she hasn't gotten around to much landscaping (has a huge organic veg garden which she uses to can their winter supply of veggies).
Last thought...did you check the exchanges section of this forum? I never thought of that while rambling on above and that's where the exchange info usually is.
Will