Check out the Minnesota Tartan Day's page about the MN tartan and the "dress" variant:

http://www.tartandaymn.org/mntartan.html

Mark Osweiler also designed the Iowa tartan and the Iowa "dress" tartan as well:

http://www.haggis-iowa.com/iowa_tartans.html

I would really like a kilt (or at least a scarf or something!) in the Iowa tartan, since my Scottish ancestors settled in Iowa in the mid 19th century.

Cheers,

Todd