Although a little shady at the left this image was worth the scan and adjust. The unit is EMD SW1500 and based on the RR Archives; its all of about two years old here … estimating by the other prints in this box.
That archive link shows it in pretty rough shape and makes me think that this little work horse was never repainted.
Also a guess but I think San Jose, California – or thereabouts. Dad did work in the Houston office for a time in 1970 where he bought a used Ford Maverick but the hills say California to me.