Online Publications Related to Colorado National Monument
Classic Western Quarrel A History of the Road Controversy at Colorado National Monument
The CCC 75th Anniversary website offers books on the history to the Civilian Conservation Corps.
Have a look at nostalgia. There are a few Colorado National Monument brochures over the years at this link. Scroll down to "Colorado" and you can look at 1949, 1958, 1964, 1975.