The Bureau Of Criminal Apprehension (part of the Dept. of Public Safety) handles all things PTC and Reciprocity.
I think the link you want is:
It's not working for me right now... That may be due to the Gov't Shutdown.
The BCA is still open, you may be able to have them fax something to you....
Minnesota Department of Public Safety
444 Cedar Street
Saint Paul, Minnesota 55101
Phone: (651) 282-6565