EMD Factory photo of the EMD SDP40F Diesel locomotive. Used to be used on amtrak as AMTK 609(SDP40F). Later Traded in for F40's for amtrak as 609 was used by EMDX as Testbed 169 To Test the new 710 EMD Prime mover engine

(Note: Engine is still peserved)

From the collection of SJ-Railroad Archives

Photograpther: Uknown / Electro Motive Division
Date: Unknown
source: Slide collection