GP7 SLSF 571 GP7 SLSF 571 This is probably train No 409 or No 410 at Lawton or Snyder on the Chickasha Subdivision. SLSF 571 was equipped with a steam generator and the car behind the engine appears to be a railway Express Agency (REA) car. Photograph taken by Charles A. Tice, location Southwestern Oklahoma. Photograph dated 1951.
