D&RGW K-37 491 takes a spin on the Colorado Railroad Museum's Armstrong turntable prior to a day of excursions for the Rio Grande Narrow Gauge Historical Society. In the background are the two oldest surviving narrow gauge steam locomotives in the state of Colorado. At right is DL&G 191 built in 1880, at left is D&RGW C-19 346 built in 1881. D&RGW 346 holds the distinction of being the oldest operating steam locomotive in the state.