Model Railroader Senior Editor Cody Grivno takes a closer look at the WalthersProto HO scale EMD GP7. Cody first explores the prototype history of the GP7, noting that Electro-Motive Division produced ...

Caterpillar Inc. on Aug. 31 marked the 100th anniversary of EMD®. Founded as Electro-Motive Engineering Corporation, EMD is now a product brand of Progress Rail, a Caterpillar company. (Courtesy of ...