Seal of South Dakota of Fort Pierre and shall be the basis for all reproductions of the great seal of the State of South Dakota. The South Dakota Secretary of State is the designated custodian of the South Dakota State Seal. Seal of South Dakota The Great Seal of the State of South Dakota was designed while the area was a territory, in 1885. The outer ring of the seal contains the text "State of South Dakota" on the top and "Great Seal" on the bottom. Also the year of statehood, 1889. Inside the inner circle of the seal contains the state motto "Under
South Dakota Highway 21 was completely concurrent with US 81, which was also established at this time. This concurrency extended from the Nebraska state line to the North Dakota state line. By 1935, all of SD 21 was decommissioned except for its current alignment. South Dakota Highway 21 South Dakota Highway 21 (SD 21) is a state highway in the eastern part of the U.S. state of South Dakota. It connects Lake Norden and Hayti, completely within the south-central part of Hamlin County. SD 21 originally extended from the Nebraska state line to the North Dakota state line, completely concurrent with U.S. Route 81