In Idaho, Curlew National Grassland
In Montana, Gallatin and Shoshone national forests
In North and South Dakota, Dakota Prairie Grasslands 
     including Little Missouri, Cedar River, Grand River, and Sheyenne
In Minnesota, Superior National Forest
In Wisconson, Nicolet National Forest
In Alabama, Bankhead and Tuskegee national forests
In Mississippi, Bienville and Delta national forests
In Arkansas/Oklahoma, Ouachita National Forest
In Texas, Caddo and Lyndon B. Johnson national grasslands
In New Mexico, Lincoln National Forest

And this is our hoped for itinerary (as my mother would say, "G-d willing 
and the creek don't rise):

June 1- Depart for Idaho and Curlew National Grassland
June 6 - Depart Idaho for Montana and Gallatin National Forest
June 17 - Depart for Wyoming and Shoshone National Forest
June 20 - Depart for North Dakota and Dakota Prairie National Grasslands
July 9 - Depart for Minnesota and Superior National Forest
July 31 - Depart for Wisconson and Nicolet National Forest
August 16 - Depart for Alabama and Bankhead National Forest
August 31 - Depart for Tuskegee National Forest
September 4 - Depart for Mississippi and Bienville National Forest
September 10 - Depart for Delta National Forest
September 14 - Depart for Arkansas and Ouachita National Forest
September 28 - Depart for Texas and Caddo and LBJ national grasslands
October 6 - Depart for New Mexico and Lincoln National Forest
October 11 - Depart for home