The story
The railroad was formed in 1902 when the Pennsylvania Railroad merged two of its southern subsidiaries, the Philadelphia, Wilmington and Baltimore Railroad and the Baltimore and Potomac Railroad.
In 1907, the PB&W became a co-owner of the new Washington Terminal Company, which operated the new Washington Union Station, the marble structure dubbed the "Transportation Temple of America".
In 1916, the PB&W operated 717 miles (1,154 km) of road, including 9 miles (14 km) of trackage rights.
Acquisitions
The PB&W acquired six railroad companies:
1906: South Chester Railroad
1913: Baltimore and Sparrow's Point Railroad, which provided freight service to Bethlehem Steel Corporation's Sparrows Point steel mill
1916: Philadelphia and Baltimore Central Railroad
1916: Columbia and Port Deposit Railway
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1916: Elkton and Middletown Railroad
1956: Pittsburgh, Cincinnati, Chicago and St. Louis Railroad (Pan Handle Route)
Improvements
In 1928, the PRR began to electrify the main line between New York City and Washington, D.C., using catenary. Electrification of the PB&W portion was completed in 1935. Amtrak still uses the 25 Hz traction power system.
Dissolution
In 1968, Pennsylvania Railroad and its longtime rival New York Central Railroad merged to form the Penn Central Railroad. The PB&W remained a separate legal entity, although controlled and operated by the new company. The Penn Central declared bankruptcy in 1970 but continued to operate trains until 1976, when the company's railroad assets were sold under the Railroad Revitalization and Regulatory Reform Act. Under the new law, Congress authorized the sale of the PB&W right-of-way between Philadelphia and Washington, and related assets (such as the Washington Terminal Company), to Amtrak. Other PB&W assets, including almost all of the PCC&StL (Pan Handle), were sold to the new Consolidated Rail Corporation (Conrail).
From Wikipedia’s article on Philadelphia, Baltimore and Washington Railroad, shared under CC BY-SA 4.0.3