No. 6315 is a class M-4A 2-10-4 steam locomotive built by Baldwin in 1927 for freight service. 6315 and the other M-4 class engines were called "Colorados" and not "Texas" types. 6315 and its class pulled drag freight trains and later fast freight trains after its rebuild.
Trivia[]
- 6315 doublehead with 5632 on a fan trip during September 1959, but regrettably the big Colorado had damaged its valve gear at speed, leaving 5632 to manage the rest of the journey herself. 6315 was put on the dead line with 6319, but was strangely not sold for scrap until 1964,
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