It's called Ghost Depot, and has all kinds of information about the Denver and Rio Grande. It even has CAD drawings of several structures, and plan views of several locomotives! It's pretty cool! Check it out!
http://ghostdepot.com/rg/index.htm
-Rory (why am I yelling!?)
http://ghostdepot.com/rg/index.htm
-Rory (why am I yelling!?)