Cowl units were always my favorite Santa Fe locomotives. The Santa Fe once had a sizeable F45/FP45 fleet. Note the BN C30-7 in the consist as well. Both of these locomotives, as well as their entire representative fleets, have been retired.
The SP helper pocket.
This is the lead power on the Tank Train. This was the most spectacular movement on the hill - a long unit train of "oil cans" laden with crude oil. The last year it ran over Tehachapi was 1996.
This SP bay window caboose (the coolest cabooses ever) was on a work train parked at the Woodford Spur.
Cotton Belt was a wholly-owned subsidiary of the SP, so they lettered a certain number of units for SSW (St. Louis Southwestern, aka "Cotton Belt") with every locomotive order. The UP merger has made these units increasingly rare.
The time-honored activity of railfanning tehachapi.