It is 478, October 1966, at the location Floppo and Mark have identified--I was standing on the shoulder of 160, and this was the balance of the passenger equipment headed to Alamosa for winter work. The tail end of this train had 2 open cars and the B-7. The last Rocky Mountain RR Club train had been several days before this and those cars were already in Alamosa. I believe there was one more passenger train from Alamosa and that would have been the Kiwanis (?) trip that I didn't bother to chase.