James Sandrin; Morning Sun Books; 2001; Colour
Rio Grande in Color Volume Three, attempts to understand the Rio Grande during the transition years of steam to diesel, give a pocket chronology of the evolving diesel fleet and glimpse scenes around the system. The photos are arranged in the approximate sequence of the events depicted.
A look at Rio Grande's mainline network year by year from 1947 to the 1980's. A very useful book.
Denver Photo Highlights:
p57. Two 1958 colour photos of the southbound Royal Gorge and PA 6011 passing under Denver's 16th Street viaduct and past the CB&Q freight house.