A pair of Pennsylvania Railroad Fairbanks-Morse "Erie-Built" units, 9473 leading 9464, swings around famed Horseshoe Curve near Altoona, Pennsylvania in August 1960. Delivered in 1947-48, locomotives of PRR's class FP20a developed 2000 horsepower. The "Erie-Builts" were constructed at General Electric's Erie, Pennsylvania plant because F-M's erecting floor in Beloit, Wisconsin was not large enough to accommodate them. My brother David (his arm at left) was photographing the same units in black and white; for his photo, click here. Also available is a publicity view of the "Erie-Built" model, from a PRR booklet booklet distributed during the 1948-49 Chicago Railroad Fair, Modern Power for Today's Trains.