Pennsylvania Railroad No. 4935
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Class: GG-1
Built: 1943
Manufacturer: Pennsylvania Railroad, Juniata Shops and General Electric, Altoona, Pennsylvania
Retired: 1980
The Pennsylvania Railroad's Class GG-1 was a heavy electric locomotive built for high-speed passenger and freight service, designed in the 1930s and produced from 1934 to 1943. It featured a 2-C+C-2 (ARR) wheel arrangement (twelve powered wheels), a dual-cab design, and an articulated frame for high-speed stability and curve handling. It was capable of pulling passenger trains at speeds of 100 mph, utilizing 11kV electricity via an overhead catenary.
The GG-1 was primarily used for electrified mainline service between Washington, D.C., and New York City, later extending to Harrisburg and beyond. It mainly hauled passenger trains and, later, mixed freight. Known for its high reliability, rapid acceleration, and smooth operation, the GG-1 remained in service under PRR, Penn Central, Amtrak, and Conrail for over 50 years.