The nickname for South Dakota is Mount Rushmore State. Mt. Rushmore is also featured on the state quarter, along with the state bird (ring-necked pheasant):
South Dakota became the 40th state in 1889 (see STATEHOOD ORDER).
South Dakota's state quarter features a ring-necked pheaand (state bird)
and Mount Rushmore (the state nickname is Mount Rushmore State).
Public domain image on Wikipedia - see 50 STATE QUARTERS.
