Jan 15, Reading Railroad (Philadelphia & Reading)

The SD9 was the six-axle version of its popular and successful GP9. It proved the bestselling first-generation road-switcher EMD cataloged.

The SD9 was the six-axle version of its popular and successful GP9. It proved the bestselling first-generation road-switcher EMD cataloged.

The GP50 was a late model, and powerful Geep cataloged during the 1980s that saw few sales as railroads turned away from four-axle road-switchers.