Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Organizations (hierarchy name)
4. organizations (groups)
5. administrative bodies
6. political administrative bodies
7. [political administrative bodies by degree of independence]
8. divisions (political administrative bodies)
9. political divisions
10. statistical areas

Anotations

Scope note:

Statistical areas in the state of Oklahoma, identified and delineated by the United States Census Bureau and federally recognized tribes, that had a former American Indian reservation in the state. Boundaries are those of former reservations, except where modified by agreements with neighboring tribes.