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Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 53, p. 234. Works numbers were 39275 on February 1913, 42692 in December 1915, and 42867 in February 1916.
The Baldwin specs include a maximum curve radius of 32 degrees on 60-lb/yard (30-kg/metre) rail. The 1913 Mogul differed from its 1906 predecessor (Locobase 11598) in a few details: the link motion was replaced by outside radial valve gear, the firebox was a bit deeper, and the weight climbed by several tons. Given that this engine, like the others, was used primarily in switching, the extra weight certainly increased the factor of adhesion.