USRA Light Mountain [SEP] designer
USRA Light Mountain
The USRA Light Mountain was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard light freight locomotive of the USRA types, and was of 4-8-2 wheel arrangement in the Whyte notation, or 2′D1′ in UIC classification.
A total of 47 locomotives were built under the auspices of the USRA. 
Original owners.
Original owners Copies.
None of the originals
20 USRA Heavy Pacifics were built.
Steam locomotive types USRA Light 4-8-2 "Mountain".
47 of the USRA Light Mountain type were built.
Steam locomotive types USRA Heavy 4-8-2 "Mountain".
15 USRA Heavy Mountains were constructed.
Steam locomotive types 2-6-6-2.
30 of the USRA 2-6-6-2 type were built.
Steam locomotive types 2-8-8-2.
106 of the USRA 2-