United States. Bureau of the CensusThese polygon data layers represents the TIGER/Line Census American Indian Tribal Subdivisions (AITS) for the United States.1f7a8424-16fd-454a-bb9f-09c7ca3dbadeengPublicIndigenous peopleIndian reservationsCensusPopulationAmerican IndiansUA Census American Indian Tribal Subdivisions, 2000Web servicesUnited States2000Harvard