Wahpeton treaties from the National Archives, and land Cessions from the Forestry Service.
Ratified Indian Treaty 159: Sauk and Fox, Sioux (Mdewakanton, Wahpacoota, Wahpeton, Sisseton, Yankton and Santee), Omaha, Iowa, Oto and Missouri - Prairie du Chien, Michigan Territory, July 15, 1830
Ratified Indian Treaty 159: Sauk and Fox, Sioux (Mdewakanton, Wahpacoota, Wahpeton, Sisseton, Yankton and Santee), Omaha, Iowa, Oto and Missouri - Prairie du Chien, Michigan Territory, July 15, 1830
Cession: 292
Ratified Indian Treaty 258: Sioux (Sisseton and Wahpeton) - Traverse des Sioux on the Minnesota River, Minnesota Territory, July 23, 1851
Ratified Indian Treaty 309: Sioux (Sisseton, Wahpeton) - Washington, DC, June 19, 1858
Ratified Indian Treaty 360: Sioux (Sisseton and Wahpeton) - Washington, DC, February 19, 1867