I want to plug this post in to this thread. Interesting insight on the early days of the Santa Fe run throughs. http://frisco.org/shipit/index.php?threads/why-didnt-the-frisco-buy-gp30s.14077/
I came across this picture on another site. The caption indicates it was taken in Arizona in 1968. Check out the Frisco auto racks at the end of the train. I think this is a picture of train QLA. If you zoom in, the front is mostly TOFC and general box cars, but the back has several auto racks and some box cars from eastern roads all together. That's how the ODS describe the makeup of the QLA at this time, hot traffic out of the southeast, with a block from St. Louis being added at Tulsa.
That photo is at Winona, AZ. ATSF/BNSF station "Darling". Looking west from the Townsend-Winona Road overpass. I live a few miles from there.