R to L, near to far.
CR SD45 6101 follows GP35 3631 through Altoona in March, 1978.
CR SD45 6225, GP35 3631, and SD45 6101 roll through Altoona with mixed freight in March, 1978.
Still in Readling Lines paint, CR GP35 3631 fnd SD45 6101 follow SD45 6225 through Altoona in March, 1978.
There were many second generation units in service at this time, mostly on locals and in yards. One such was this GP 35 at Arlington, seen heading toward DC from Potomac Yard.
1747-CR 3631+
A set of CR power at the engine facility.