D&RGW K-37
 Denver & Rio Grande Western K-37s are 2-8-2 Mikado type narrow gauge steam locomotives. They were originally built by Baldwin as part of an order for thirty standard gauge 2-8-0 Consolidation type locomotives class 190 in 1902. They were renumbered into class C-41 during the railroad's reorganization in 1924 and were converted to three foot gauge in 1928-30 at the railroad's Burnham Shops with many new parts including new frames and smaller drivers.