Photographs and simple text portray five working steam locomotives of the Durango & Silverton Narrow Gauge Railroad as they travel through the Rocky Mountains of Colorado.
Simple text and illustrations depict different kinds of trains going uphill and downhill, crossing bridges and tunnels, using electricity or steam, carrying passengers or freight, even when it snows.
Presents the history and development of the transcontinental railroad linking the Pacific and Atlantic coasts and follows the construction of the Central Pacific from Sacramento and the Union Pacific from Omaha, Nebraska.