Here is a list of books (in alpha order) related to Colorado narrow gauge railroads.
- A Century plus Ten of D&RGW Narrow Gauge Freight Cars, 1871 to 1981
- Narrow Gauge in the Rockies
- Narrow Gauge Pictorial Volume I Rio Grande Southern and D&RGW Motive Power
- Narrow Gauge Pictorial Volume II Passenger Cars of the D&RGW
- Narrow Gauge Pictorial Volume III Gondolas, Boxcars and Flatcars of the D&RGW
- Narrow Gauge Pictorial Volume IV Refrigerated Cars, Stock Cars and Tank Cars if tge D&RGW
- Narrow Gauge Pictorial Volume V Cabooses of the D&RGW
- Narrow Gauge Pictorial Volume VI Motive Power of the Colorado and Southern
- Narrow Gauge Pictorial Volume VII Denver and Rio Grande Western Work Equipment--OA-OZ
- Narrow Gauge Pictorial Volume VIII Colorado & Southern Freight and Passenger Cars
- Narrow Gauge Pictorial Volume X Numbered Work Cars of the D&RGW
- Narrow Gauge Pictorial Volume XI Locomotives of the D&RGW
- Rio Grande Narrow Gauge
- The Mudhens A Photographic History