"Nation's First Shelterbelt" is 5 miles east and 1 mile north of the "First Shelterbelt in the United States" marker located on U.S. 238 north of Mangum, Oklahoma. (Road to Shelter Belt/Lake Creek not on Oklahoma State Highway Map. Its the road right next to "First Shelterbelt in the United States" marker.) The Shelterbelt is 1 mile north of Lake Creek monument.
From Mangum, go north on Highway 34 for 11 miles, then east for 5 miles, then 1 mile north. From Granite: Go north on highway 6 for 5 miles, then west 2 miles, then 1 mile north.