The Pittsburgh Division had its earliest beginnings in 1837, but what would be known as the main line was not completed until 1871. At its height, the Pittsburgh Division consisted of five distinct main lines and 14 branch lines, and the division had trackage rights over the Western Maryland and Pittsburgh & Lake Erie Railroads. Images of Modern America: The Baltimore & Ohio Railroad's Pittsburgh Division looks at five of these lines: the B&O Main Line from Cumberland to Pittsburgh; the Pittsburgh and Western; the Somerset and Cambria; the Fairmont, Morgantown and Pittsburgh; and the Wheeling, Pittsburgh and Baltimore

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