SP 7423 brings its mid train helpers out of the siding at Edison, CA in April 1988.

SP 7423 brings its group of mid train helpers out of the siding at Edison, CA in April 1988.

SP SD45R 7423 brings its group of seven mid train helper units out of the siding at Edison, CA early on a gloomy valley day in April 1988. This horsepower should give its train a pretty hefty boost up the Tehachapi grade.

Nikon F3HP