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country. There is a road shown on the map, extending westward from the mouth of the Wisconsin River, by way of Spirit Lake, Iowa, to Sioux Falls, and marked "track of the voyagers." From all of these things it is believed

De l'Isle's Map, made from Information supplied by Le Sueur

that Le Sueur was the first white man to enter the South Dakota country, but if he did not come here himself, it is quite certain that other white men in his employ did do so, at or before the beginning of the eighteenth century.