Black and white pictorial of K-27 class locomotives on the DRGW and Rio Grande Southern. Shows each locomotive at various places and times during its operating life. There is a brief history of the K-27 class, modifications made to the engines during their operation, and some specifics on most of the locomotives. There is also an appendix that includes a description of construction, drawings showing the general class dimensions, and mileage/elevation tables for the various D and RGW branches the locomotives were used on