A typical mid-'70s Southern Pacific lash-up - a trio of SD45s and a U33C - pass the Colton Tower, which controls the crossing of the SP and the Santa Fe (over which the Union Pacific has trackage ... (more)
An SP SD45 behind the UP "pool" caboose adds braking power to a westbound manifest.
SD45 9044 acts as rear helper behind the caboose on a westbound that came off the UP at Ogden, Utah.
Cotton Belt 9298 West's rear heler ducks under No. 1 track at Rocklin as it rolls westward off Donner Pass toward Roseville.