© Michael Taylor

5 locomotives (15,800 hp) are seen braking an eastbound train as it descends Horseshoe Curve at Altoona, PA in August 1977.

Lead engine: CR 6135 (ex-PRR 6135) SD45 3600 hp built Nov 1966
2nd loco: CR 6208 (ex-PRR 6208 eventually SP8616) SD45 built Jan 1968
3rd CR3680 (ex-EL2574 still in EL colours) GP35 2500 hp built between 1963-66
4th CR6228 (ex-PRR 6228 later CNW 6551) SD45 built Jan 1968
5th CR2296 (ex-PRR 2296 in Conrail Blue later became NS 2910) GP35 built June 1964.