Question: Dora Old Elk  grew up on an indian reservation established in what year?
Sentence (from "Gila River Indian Reservation"): Gila River Indian Reservation was a reservation established in 1859 by the United States government in New Mexico Territory, to set aside the lands of the Akimel O’odham (Pima) and the Pee-Posh (Maricopa) people along the Gila River, in what is now Pinal County, Arizona.
Relevant evidence: No