GP7 SLSF 562 GP7 SLSF 562 Frisco file photograph of the 543-549, 555-605 series delivered in 1951. Western Historical Manuscript Collection. Photograph dated 1951. Edit 2/28/2024: General Motors (GM) Electro-Motive division (EMD) builder's photograph. Taken at the EMD Plant 3, Cleveland, OH. The locomotive was shipped from EMD in November and received by the Frisco on 12/4/1951. MKD