Names
- Marshall University9
- United States. Department of Labor8
- Wichita and Affiliated Tribes8
- Caddo Nation7
- Kiowa Tribe of Oklahoma7
- Ottawa Tribe of Oklahoma7
- United States. Americans with Disabilities Act of 19907
- Quapaw Nation6
- Comanche Nation5
- Hopi Tribe of Arizona5
- Miami Tribe of Oklahoma of Oklahoma5
- Osage Nation5
- United States. Black Lung Benefits Reform Act of 19775
- Apache Indians4
- Apache Tribe of Oklahoma4
- Caddo Nation of Oklahoma4
- Cheyenne and Arapaho Tribes4
- Comanche Indian Tribe4
- Harkin, Tom4
- Kiowa Indian Tribe of Oklahoma4
