It’s November of 1972 and Fred was visiting Barstow, Pentax and zoom lens in hand, visiting the ATS Barstow shops. Also partially visible are ATSF 25 and ATSF 4579.
ATSF 25 Appears to be a freight F3B but someone will have to verify since I cannot locate ant information beyond this link and that looks to be Warbonnet; so I don’t know.
ATSF 4579 seems to be a SD26 but again my Google Skills have me asking for input on this as well.
Anyway, hope that this looks okay and you enjoy this image as I do.