I have four arriving Monday. I elected to go with just the private owner cars since they would be more plausible than, say, a PRR car running on my UP of 1970. The private owner cars would also be good choices to set the stage for specific industries.
Craig sort of buggered me on the UP version, using 3-panel COTS
and U-1 wheel dot, putting the lettering > 1980. I'm guessing he had no good reference for the UP cars as-built.
