The video below is at least 12 years old, but it tells some good history of the creation of the Georgetown Loop as well as its rebuilt version. They also tell a bit of a story that I find fascinating: the process required to move the impending I-70 up on the mountainside so that the Loop could be saved.
Focus on the railroad begins around 3:43
Speaking of old Georgetown Loop videos, here is one from when I rode the line in 1991 with Westside Shay No. 14 (now named after Rosa Ashby who along with her husband Lindsey played such a huge role in bringing the Georgetown Loop back to life in the early 1970s). I unearthed this old family video of a 1991 ride behind No. 14 on the Loop. The titles, editing, and music are from a long time ago so my apologies for its aged appearance! Unfortunately, the original sources remain on some old VHS-C tape somewhere. Along the way, you will get some glimpses of D&RGW freight cars and at 5:17 you can see C&S 2-6-0 No. 9 still in red paint sitting on Morning Star siding. Pulling into Silver Plume you get a glimpse of Oahu Railway and Land Co. diesel 15 and at the end you'll see Shay No. 12 steamed up outside the engine house).
This is the next video in a series I'm working on that follows the old DSP&P/C&S roadbed through Platte Canyon. Using footage provided by Phil Stock, this segment starts from a little past Muldoon (later known as Vermillion). From there we follow the South Platte River to Longview, followed by a station stop at Dome Rock. Dome Rock is a curious geological formation across the river. The station at Dome Rock is no longer in existence, but Phil stops close to where it once stood.
Finally, as we head toward the site of the Dome Rock water tower, the video briefly tells the fateful story of the 1898 wreck of Billy Westall's train. This video's journey ends at the monument that honors Westall's sacrifice.