June 13 On this date in 1862, Sylvester Mowry’s silver mine at Patagonia was confiscated and Mowry was arrested on charges of being a Confederate sympathizer. On this date in 1901, the first commencement exercises were held at Northern Arizona Normal School with class of four graduates. On this date in 1908, 2,000 residents of the Salt River Valley watched as Gov. Joseph H. Kibbey pulled the lever which raised gates on the newly completed Granite Reef Dam. On this date in 1913, Thomas E. Farish, author and mining engineer, was appointed state historian. June 14 On this date in 1879, an executive order set aside the Salt River Indian Reservation for Pima and Maricopa Indians.