Ratified Indian Treaty 139: Sioux, Chippewa, Sauk and Fox, Menominee, Iowa, Winnebago, and Part of Ottawa, Chippewa and Potawatomi of Illinois - Prairie du Chien, Michigan Territory, August 19, 1825
Ratified Indian Treaty 80: Winnebago - St. Louis, Missouri Territory, June 3, 1816
Ratified Indian Treaty 139: Sioux, Chippewa, Sauk and Fox, Menominee, Iowa, Winnebago, and Part of Ottawa, Chippewa and Potawatomi of Illinois - Prairie du Chien, Michigan Territory, August 19, 1825
Ratified Indian Treaty 148: Chippewa, Menominee, Winnebago - Butte des Morts on Fox River, Michigan Territory, August 11, 1827
Cession: 134
Ratified Indian Treaty 153: Winnebago and United Potawatomi, Chippewa and Ottawa - Green Bay, Michigan Territory, August 25, 1828
Ratified Indian Treaty 156: Winnebago - Prairie du Chien, Michigan Territory, August 1, 1829
Cession: 149
Ratified Indian Treaty 169: Winnebago - Fort Armstrong, Rock Island, Illinois, September 15, 1832
Cession: 174
Cession: 267
Ratified Indian Treaty 228: Winnebago - Washington, DC, November 1, 1837
Cession: 245
Ratified Indian Treaty 249: Winnebago - Washington, DC, October 13, 1846
Cession: 361
Ratified Indian Treaty 288: Winnebago - Washington, DC, February 27, 1855
Cession: 416
Cession: 439
Ratified Indian Treaty 310: Winnebago - Washington, DC, April 15, 1859
Cession: 468
Ratified Indian Treaty 335: Winnebago - Washington, DC, March 8, 1865