Founded on the principles of unity and cooperation among Indian governments and people of the Great Plains. The Great Plains Tribal Chairmen's Association (GPTCA) is made up of the 16 Tribal Chairmen, Presidents, and Chairpersons in the great plains regions. Collectively, we represent over 100,000 tribal members across the states of North Dakota, South Dakota, Montana, Iowa, and Nebraska. Great Plains Tribal Chairman's Association Listing: South Dakota Chairman Harold Frazier - Cheyenne River Sioux Tribe, Chairman, GPTCA Chairman Peter Lengkeek - Crow Creek Sioux Tribe Chairman Clyde Estes - Lower Brule Sioux Tribe President Kevin Killer - Oglala Sioux Tribe Chairman Rodney Bordeaux - Rosebud Sioux Tribe Chairman Bob Flying Hawk - Yankton Sioux Tribe Chairman Delbert Hopkins Jr. - Sisseton Wahpeton Tribe President Tony Reider - Flandreau Santee Sioux Tribe North Dakota Chairman Mark Fox - Three Affiliated Tribes Douglas Yankton, Sr - Spirit Lake Tribe Chairman Mike Faith - Standing Rock Sioux Tribe Chairman Jamie Azure - Turtle Mountain Band of Chippewa Nebraska Chairman Everett Baxter Jr. - Omaha Tribe Chairman Roger Trudell - Santee Sioux Nation Chairman Larry Wright - Ponca Tribe of Nebraska Chairwoman: Victoria Kitcheyan - Winnebago Tribe