It might be a little while before I get to them (Only got about 700 other images before them!) but I assure you there are some goodies in there.
Yay! Blackhawk was THE source for movies and slides back in the day. I have some of their N&W, VGN and D&RGW (NG) slide sets.
Conrail caboose 46138R, Euclid, OH, September 7, 1977 (????) Nekoosa Papers S-1 14, Nekoosa, WI, October 1978 (Bob Jordan)
Santa Fe GP38 3555, Denver, CO, February 1974 (Bob Jordan) Santa Fe F9B 285A, April 1974 (Bob Jordan)
An F-9B! So much less common than those ubiquitous F-7B's! How nice! Oh, wait. I still can't tell the difference...
Detroit Edison SD40 005, Denver, CO, October 1973 (Bob Jordan) Santa Fe GP38 3541, Denver, CO, 1973 (Bob Jordan)
Santa Fe GP7 2651, Denver, CO, April 1973 (Bob Jordan) Santa Fe U23B 6333, Denver, CO, March 1973 (Bob Jordan)
The Rio Grande's Ski Train winds its way up the Front Range on its way towards Winter Park, March 1978 (Bob Jordan) The San Francisco Zephyr rolls across the South Platte as it heads out of Denver behind Amtrak E8 337, April 1974 (Bob Jordan)
The San Francisco Zephyr roars west towards Denver behind a trio of E-Units, February 1974 (Bob Jordan) The SFZ waits at Denver Union Station for departure, headed up by Amtrak E8A 337, Denver, CO, April 1974 (Bob Jordan)
For those of us who lived it and saw it, especially as railfans, it was quite spectacular. But it also marked a major change point in railroading, which in it's own way was quite sad.
Pretty close, but I looked closer at the cars trailing the locos and they appear to be different consists, but its likely that they were taken within a matter of days. A quintet of E-Units, led by E8A 351, pull the San Francisco Zephyr during a chilly December day in 1973 somewhere near Denver (Bob Jordan) Heading west towards Denver, the SFZ is lead by SDP40F 625 at it speeds towards the camera, August 1974 (Bob Jordan)
All I have to say about this first one is that it is simply Grande. January 1975 (Bob Jordan) A freight headed by GP40 3081 rolls through the siding at Plainview, December 1974 (Bob Jordan)
Another excellent Rio Grande scene, September 1973 (Bob Jordan) Rio Grande caboose 01507, East Portal, CO, September 1974 (Bob Jordan)