Roberts County, long home to the Sisseton, Wahpeton, and Cuthead Yanktonaise Sioux, became part of Deuel and Cheyenne Counties in 1862, with Deuel extended north to the 46th parallel in 1872. The Reservation, extending south to Lake Kampeska in a giant flatiron, was established in 1867. Grant County included the part southeast of the Reservation from 1873 to 1883, when Roberts County, named for S.G. Roberts, Territorial Councilman of Fargo, was created. It was organized on August 6, 1883, by Frederick Dittes, Charles Crissey, Indian Agent, and Reuben R. Hall at Dittes’ residence, and Travare, 2 miles southwest of Browns Valley, was named county seat. In 1884 Wilmot won the election, but after losing two court actions stole the records and was named county seat by the 1885 legislature; it in turn lost an election in 1898 to Sisseton, which, fearing court action, also stole the records and won approval in the 1900 election. White settlement on the Reservation came in 1892 and the railroad reached Sisseton in 1893. Post offices included Sisseton Agency in 1872, Wilmot in 1881, White Rock in 1885, Corona in 1886, Summit, Sisseton, and Effington in 1892, and Rosholt, Victor, Hammer, and Claire City in 1914, when the Soo Line entered the county. Day County, created west of the Sisseton Reservation Line, was surveyed in 1869 and named in 1873 from parts of Greeley and Stone Counties by the Legislature of 1879 for Merritt H. Day of Turner County. Before that, its area had been in a gigantic Hanson County in 1870. Its first white resident was Francis Rondelle, a trader in the area as early as 1868, and Horace J. Austin, surveyor, located him living 2 miles west of present Waubay in October 1877. Earl P. Owen settled near Minnewaste Lake in April 1877 and was postmaster at Waubay, at the east end of Waubay Lake, on November 3, 1879. In 1880 the Milwaukee, pushing in from the east, ran its first train into Webster City, on J.P. Webster’s homestead, on October 27. The Reporter and Farmer began in September 1881, and on January 2, 1882, Charles Warner, Lansing Sykes, and George Bryant organized Day County as county commissioners and named Webster county seat. The present area at the Reservation Line was added in 1883, and its southern tier of townships was taken from Clark and became part of Day in 1885. On the High Coteau, with lakes including Pickerel, Enemy Swim, Blue Dog, Waubay, and thirteen lesser but sizeable lakes, the county abounded in fish and waterfowl, while its richly grassed uplands sheltered other game birds.