Interchange Series

The Interchange series contains articles about railroads that interchanged with the Pennsy, including fleet statistics and paint schemes with era-appropriateness guidance. A few noteworthy or pertinent freelance model railroads are included.

RDG XMReading HeraldThe Reading Company was a company that was involved in the railroad industry in southeast Pennsylvania and neighboring states from 1924 until 1976.

Commonly called the Reading Railroad and logotyped as Reading Lines, the Reading Company was a railroad holding company for the majority of its existence and was a (single) railroad during its later years. It was a successor to the Philadelphia and Reading Railway Company founded in 1833. Until the decline in anthracite loadings in the Coal Region after World War II, it was one of the most prosperous corporations in the United States.

Competition with the modern trucking industry that used the Interstate highway system for short distance transportation of goods, also known as short hauls, compounded the company's problems, forcing it into bankruptcy in the 1970s. Its railroad operations were merged into Conrail in 1976, but the corporation lasted into 2000, disposing of valuable real estate holdings.

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Western Maryland LogoThe Western Maryland Railway (reporting mark WM) was an American Class I railroad (1852–1983) which operated in Maryland, West Virginia, and Pennsylvania. It was primarily a coal hauling and freight railroad, with a small passenger train operation.The Western Maryland Railway (reporting mark WM) was an American Class I railroad (1852–1983) which operated in Maryland, West Virginia, and Pennsylvania. It was primarily a coal hauling and freight railroad, with a small passenger train operation.

The WM became a property of the Chessie System holding company in 1973, although it continued independent operations until May 1975 after which time many of its lines were abandoned in favor of parallel Baltimore and Ohio Railroad lines. In 1983 it was fully merged into the Baltimore & Ohio Railroad, which later was also merged with the former Chesapeake and Ohio Railroad into the Chessie System in 1987, which is now renamed as CSX Transportation.