Hey Robin,
Welcome to e-budo! I have to definitely second Neil's opinion on Al Kilgore. There has been quite a bit of discussion about him on the web that can be googled. Suffice to say that if you're looking for traditional Japanese sword arts, don't look in his direction. In the Minneapolis area, I would recommend Toyama ryu at the Seiryuukan dojo run by Robert Steele ... http://www.seiryuukandojo.com/ or Muso Shinden Ryu at the Mutokai dojo, which I believe is run by Karl Peterson. There is also Kendo at the Minnehaha Kendo Club ... http://minnehahakendo.org/
Good luck!
Paul Smith
"Always keep the sharp side and the pointy end between you and your opponent"