It took me almost eight years but I finally got all 20 of the Norfolk Southern heritage units leading the different freight trains in the NS system mostly in the east central Georgia region. These units were made in 2012 during Norfolk Southern's 30th Anniversary. The historical railroads represented were the Savannah & Atlanta, New York Central, Reading, Erie, Virginian, Wabash, Central Railroad of New Jersey, Illinois Terminal, Penn Central, Lackawanna, Monongahela, Conrail, Southern, Nickel Plate Road, Central of Georgia, Pennsylvania, Norfolk & Western, Lehigh Valley, Interstate, and Original Norfolk Southern railroads.