I haven't finished looking it all over, but you may be interested in
pointing your browser to

    http://pipedreams.mpr.org/festival/schedule.shtml

and finding out more information on Festival Organ, which appears to be
a huge number of organ events over a 5 month period in the Saint Paul/
Minneapolis area.  Amongst many specifically organ-related events was
the following:

  Sunday, May 31, 1 PM -- Outdoor Organ Rally sponsored by the Snowbelt
  Chapter of Music Box Society International: a massed gathering of
  band organs, monkey-organs, organettes, and music boxes; Como Park
  Pavilion, 1360 N. Lexington Parkway in Como Park, St. Paul (free)

I'm already excited!

Jon Miller
Saint Paul MN