On May 24, 2012, the South Dakota DOT's Transportation Commission officially declared Interstate 90 from the Minnesota border to the Wyoming border as South Dakota's segment of the National Purple Heart Trail. The Purple Heart Trail was . . . — — Map (db m113430) HM
South Dakota's rich western heritage has been remembered along the Interstate highway system at safety rest areas and tourist information centers.
The eight pillars which thrust skyward here merge in the framework of a tipi, the Plains Indian . . . — — Map (db m37138) HM