Features: * The Pennsylvania Railroad was the largest railroad by traffic and revenue volumes in the US throughout its 20th-century existence and, at its peak, controlled some 10,000 miles of rail line. New $19.27 (16% off). As such, the Pennsy became known as the Standard Railroad of the World not only for the standard to which all other railroads could aspire, but standard in its equipment and structure designs as well. * These kits are based on PRR standard prototypes that not only are a must for every Pennsy fan's layout, but look right at home on any model railroad dating from the early 1900s through the 1960s. * Watch Boxes were placed at grade crossings where no automatic crossing gate e