Charlie, Those were Sublette turns we shot in July. They ran chimney first to Sublette, then ran around the train, and tender-first back to Antonito. Something tells me they were two in one day, morning and afternoon. The schedule back then was changing as I recall, as some days were out of Antonito, and others were out of Chama.
I remember riding one train from Chama eastward to maybe Big Horn, or through to Antonito. I think in the fall we rode to Cumbres from Chama for $5.00 each. It was a really overcast day, and trackside shots were not great so we enjoyed the slog up the 4%, which is always a good show!
Greg
PS I have old movies of this stuff around, but have not had it transferred, as it was low priority.