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The Pima Villages and some of their lands were included in the Gila River Indian Reservation in 1859. An Indian Agency was established at Casa Blanca with Silas St. John, (station agent of the Butterfield Overland Mail at Casa Blanca Station), appointed on February 18, 1859, as Special Agent for the Pima and Maricopa Indians. Agent St. John also conducted a census of the villages later that year.