

This line became the Lurgan Subdivision and was leased from the Baltimore and Cumberland Valley Railroad in 1881, and was connected to the Harrisburg and Potomac Railroad in 1886.



Under the leadership of company president John Mifflin Hood, the railway made its first extension into Pennsylvania by leasing a line from Edgemont, Maryland, to Waynesboro and Shippensburg. The WM built Pen Mar Park as a mountain resort in 1877 and ran excursion trains from Baltimore. The WM built a connection from Hagerstown to Williamsport, in order to access coal traffic from the Chesapeake and Ohio Canal. It built a branch east of Union Station to Hillen Station, which opened in 1876 and became the company headquarters. In 1873 the WM built its own line from Owings Mills to Fulton Junction in Baltimore, and obtained trackage rights from the Baltimore and Potomac Railroad (B&P) for the remaining two miles of the route eastward to Union Station (later called Penn Station). The company's first major car shops were established at Union Bridge. This section became the East Subdivision. Westward construction resumed in 1868 under Chief Engineer Joseph S. Gitt, and the line was completed to Hagerstown in 1872. Further expansion was delayed because of the Civil War. The railroad was completed to Westminster in 1861 and Union Bridge in 1862. An existing Northern Central Railway branch line terminating at Owings Mills was used to connect into Baltimore. The Maryland General Assembly changed the name of the company to the Western Maryland Rail Road Company in 1853, and construction began from Owings Mills in 1857. The original main line began with the chartering of the Baltimore, Carroll and Frederick Railroad in 1852, with the intent of building a rail line from Baltimore west to Washington County, Maryland. Western Maryland Rail Road Company gold bond, issued 1917 Main line: Baltimore to Hagerstown
