Prototype Protofile

Learn the in-depth history of the actual real-world prototype trains that inspired your favorite scale models.

Canadian National and Norfolk Southern SD70ACU

November 9, 2020

Canadian National and Norfolk Southern SD70ACU

The SD70ACU is a rebuilt six-axle diesel locomotive that utilizes SD90MAC cores.

Rio Grande’s Famous 5771

October 5, 2020

Rio Grande’s Famous 5771

Rio Grande’s 5771 may be the photographed F-unit of all time.

Four EMD GP38-2s for Illinois Terminal

September 24, 2020

Four EMD GP38-2s for Illinois Terminal

Illinois Terminal added four EMD GP38-2s to its roster in the late 1970s and Athearn included them in a Genesis-series production of HO-scale models.

Santa Fe’s SD40-2s and Kato’s N-scale model

September 21, 2020

Santa Fe’s SD40-2s and Kato’s N-scale model

Santa Fe’s SD40-2 fleet joined the roster in the late 1970s and saw several modifications later in their careers.

Reading’s Five EMD GP40-2s

August 20, 2020

Reading’s Five EMD GP40-2s

Reading’s Five GP40-2s were among the last new power for the railroad, and the subject of an Athearn Genesis HO-scale model.

86-foot High-Cube Boxcars

August 6, 2020

86-foot High-Cube Boxcars

The development of 86-foot high-cube boxcars was a joint venture between several U.S. railroads and freight car builder American Car & Foundry.