Yes, it did have logging lines and back in 1971 the Colorado RR Museum published a book about those along the Rio Grande and Rio Grande Southern. The book was entitled
Logging along the Denver & Rio Grande and the author was Gordon Chappell. This book covered Southwestern Colorado and New Mexico.
The
AbeBooks website lists five copies between $100 and $180.
The
Alibriswebsite lists three copies (two are also listed with AbeBooks) between $115 and $150.
Amazon partnered re-sellers list five copies between $112 and 180.00 (At least one of the dealers also lists with the other two sites)
Brian Norden