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The EMC-TA was a model of Diesel locomotive produced for the Chicago, Rock Island and Pacific Railroad by the Electro-Motive Corporation in 1937. The original six "Rock Island Rocket" streamliners were three- or four-car stainless-steel semi-articulated trainsets built by Budd Company, powered by six identical locomotives, #601-606. The locomotives were classified as model TA—the T indicating Twelve hundred hp (890 kW), the A indicating an A unit (cab-equipped lead locomotive). The Rock Island Line was EMC's only customer for the TA locomotive model.