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The following table lists HO scale models of Pennsylvania Railroad towers that have been produced. Not all models indicated are readily available.
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Alco FA1 / FB1, Class AF15
The ALCO FA was a family of B-B diesel locomotives designed to haul freight trains. The locomotives were built by a partnership of ALCO and General Electric in Schenectady, New York, between January 1946 and May 1959. They were of a cab unit design, and both cab-equipped lead (A unit) FA and cabless booster (B unit) FB models were built. A dual passenger-freight version, the FPA/FPB, was also offered. It was equipped with a steam generator for heating passenger cars.
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The Pennsy was known to operate on its rails locomotives which it did not own. These inclued railroad test units, builder test units, demonstrators, and leased units.
Railroad Test Units
July and August, 1924: The PRR borrowed a 37-ton GE gas-electic at the piers in New York City.
1937: The PRR borrowed an EMC 600 hp switcher for potential use at the General Motors plant in Linden, New Jersey. The Pennsy purchased the unit afterwards -- Class ES6 #5911.
1947: The Pennsy tested an F-M H20-44 as a potential helper west of Altoona. They eventually went with EMD F3's for this purpose, in an A-B-A configuration.
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Many years ago, at a Pennsylvania Railroad Technical & Historical Society annual meeting in Ohio, I procured a packet of documentation pertaining to MO tower at Cresson, Pa. The notes started in the early 19-teens and extended through the end of Pennsy.
One section included a study conducted during the middle of World War II to determine the feasibility of installing bi-directional signalling between SO (South Fork) and MO (Cresson) on the west slope. In a form dated April 7, 1942, Pittsburgh Division management requested authorization for the expenditure of $149,883 for "Reverse signals on number three track -- "MO" to "SO" and changes to crossovers at interlockings". The justification was as follows:
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GE U25B, Class GF25
The GE U25B was General Electric's first independent entry into the United States domestic road switcher diesel-electric locomotive railroad market for heavy production road locomotives since 1936. From 1940 through 1953, GE participated in a design, production, and marketing consortium (Alco-GE) for diesel-electric locomotives with the American Locomotive Company. In 1956 the GE Universal Series of diesel locomotives was founded for the export market. The U25B was the first attempt at the domestic market since its termination of the consortium agreement with Alco.
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This table cross references Pennsy electric locomotives by class, type, sub class, sub class designator, year of introduction, and availability of HO scale models.
Eventually, clicking on minor class number will link to a class-specific page which will include prototype builder data, specifications, unit rosters, and unit photos.
Corrections and additions to this page are welcome. However, please refrain from submitting roster and subclass information for classes whose class detail pages have not yet been created. Thank you.
Read more: Electric Locomotive Class / Model Cross Reference
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Trailer Numbering
Early Trailer Numbering
The trailer number was broken into three parts. The first two digits indicated the trailer length. These two digits were followed by an alphabet letter (C, E, or W). The significance of the letter is unknown. The letter was followed by numbers indicating the trailer number. Thus trailer 32E250 is a 32’ trailer numbered 250.
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The Pennsylvania Railroad was a pioneer in the development of trailer on flat car (TOFC) service and was the principal partner in the formation of Trailer Train Corporation.
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Alco S-1 and S-3, Class AS6
The ALCO S-1 and S-3 were 660 horsepower switcher diesel-electric locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works (MLW). The two locomotives differed only in trucks, with the S-1 using ALCO's own Blunt trucks, and the S-3 using AAR type A switcher trucks. The S-1 was built between April 1940 and June 1950, with a total of 543 completed, while the S-3 was constructed between February 1950 and November 1953 (MLW until 1957) with total sales of 300.
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The Penn Texas was a named passenger train of the Pennsylvania Railroad that ran from New York City's Pennsylvania Station to St. Louis' Union Station from 1948 to 1970. The train also interchanged cars at Harrisburg, Pennsylvania with Washington, D.C., via York, Pennsylvania and Baltimore, Maryland.
