Hordes of pioneers moved west at a time when Dakota Territory was still unsettled. When the railroad came to town, this land of opportunity soon became a small town called De Smet. Through the years, muddy streets and wooden shacks were replaced with brick and mortar, and the little town grew into a county seat. The hallmark of De Smet comes from the pen of Laura Ingalls Wilder, when she wrote five of her Little House books set in the community. Ensuing years saw the demolition of several of De Smet's heritage buildings, but others remain today, and the validity of these structures bring untold numbers to view them. Long-standing traditions, such as Old Settler's Day, have remained within the borders of the community and are still an exciting part of the town's history.