| SP GP35R 6309, Phoenix, Arizona, October 1979, photo by Chuck Zeiler. Built as road number 7471 in May 1964 (c/n 29557) on EMD Order 5669, it became 6583 after the 1965 renubering, and was rebuilt by Morrison-Knudsen to GP35R 6309 (SP class EF425K-1) sometime during 1978. |