Branch Line EmpiresThe Pennsylvania and the New York Central railroads helped to develop central Pennsylvania as the largest source of bituminous coal for the nation. By the late 19th century, the two lines were among America's largest businesses and would soon become legendary archrivals. The PRR first arrived in the 1860s. Within a few years, it was sourcing as much as four million tons of coal annually from Centre County and the Moshannon Valley and would continue do