The Electro-Motive Division's original six-axle diesel-electric road switchers were the SD7 and SD9. Producing 1,500 and ... in relatively small numbers. EMD produced 188 SD7s and 471 SD9s ...

A new run of the WalthersProto HO EMD SD9 was recently released. Join Senior Editor Cody Grivno as he provides a brief history of Great Northern No. 595, points out the many freestanding details ...