A former Baltimore and Ohio F7A, MDOT 7100 was the first of several F-units to be rebuilt by Morrison-Knudsen for Maryland commuter service. Unlike the other rebuilds, the 7100 lost its prime mov... (more)

In 1981, the Maryland Department of Transportation took delivery of five rebuilt F7A’s from Morrison-Knudsen. Four of the units were essentially in-kind rebuilds of the original configuration, ... (more)