for illustration only
CHAPPELL, Gordon & HAUCK, Cornelius W.
Scenic Line of the World / Black Canon Revisited - The Story of America's Only Narrow Gauge Transcontinental
The narrow gauge line of the Denver & Rio Grande through the Rockies. This line was supplanted in 1890 by a new standard gauge line, leaving only the Black Canon of the Gunnison as a narrow gauge section into the 1950s. Historic photographs throughout.