Santa Fe Train No 15 on it's daily run from Williams Junction to Grand Canyon. c. 1962-64.
That's not the Sun but an artifact caused by Dad's use of glossy paper. This was the typical consist. The Grand Canyon (trains 123W and 124E) each dropped a Pullman at Williams Junction during the night which the crew of train #15 switched in while switching out Pullmans from GC (the previous evening) and into the #123 and #124. Coach service was provided by that old green ice-cooled Combine. Grand Canyon heavyweight coaches were ice cooled the whole route. I remember watching a crew filling the under-car bunkers with large ice blocks during the 10min stop at La Junta.