04-07-1973
ATSF 625 (H12-44) switching in Amarillo TX. These units were renumbered from 500's to avoid conflict with Amtrak's new order of SDP40F's also in the 500 series. As the Alco and Baldwin switchers left or were retired, ATSF brought in a group of these FM units to switch Amarillo in early 1970's.