Instead, this is a steam turbine, nothing like the 1920s and 30s experiments with conventional locomotives, nor even the Union Pacific’s oil-fired condensing turbo-electrics. The new idea here ...

Instead, this is a steam turbine, nothing like the 1920s and 30s experiments with conventional locomotives, nor even the Union Pacific’s oil-fired condensing turbo-electrics. The new idea here ...

At Operating Speeds, the First Locomotive In America to be Driven by a Steam Turbine Geared Directly to the Driving Wheels Compares Favorably With the Most Economical Reciprocating Units.