100 Days 48 States

MINNESOTA

Grand Portage NM Grand Portage, MN
The site is off of route 61, near the Canadian border. You'll find the stamp in the ranger station next to the parking lot.
Mississippi NR & NRA St. Paul, MN
This may be the only stamp I've even gotten in an office building. The park headquarters is at 175 East 5th Street in downtown St. Paul. I parked in the lot beneath the building, then took the elevator up to Suite 418 where the stamp is kept.
Pipestone NM Pipestone, MN
Pipestone is in southwestern Minnesota. Follow the signs from US-75, route 23 or route 30. The stamp is kept in the Upper Midwest Indian Cultural Center which is connected to the visitor center.