This watercolor painting reproduction shows the World Famous Horseshoe Curve with passing trains PRR #5809 and NS Office Car Specials pulling passenger heritage units. Manufactured by Electro-Motive Division of General Motors, the F-unit model series began with the FT in 1939 and continued to the F9 in 1959. More than any other locomotive, this is the one that proved the economics of diesel power. Norfolk Southern purchased and rebuilt two F9As and two F7Bs from Kansas City Southern for executive train service in 2007. Office Car Specials (OCS) are a way for management and customers to see the railroad. And PRR #5809 is one of a pair of Conrail Electro-Motive Division E8’s that have been meticulously overhauled and painted in the Pennsylvania Railroad wide-stripe paint scheme at the Juniata Terminal Facility in Philadelphia, Pennsylvania by Bennett Levin. These two units often pull the company’s private passenger cars, and have run excursions throughout the northeast. P. Lerro 2012.