A trio of ex-PRR exotics make up Penn Central's hump job at Selkirk Yard as a pair of Alco RSD-12s sandwich a GP9B.

The Jersey Central owned thirteen six-axle Alco RSD4s, and a regular assignment for a pair of them in later years was the hump switcher job at the CNJ/RDG Allentown, PA, yard. CNJ 1611-1608 paused... (more)

The Union Pacific Pocatello, Idaho hump switcher grabs a cut of cars from the yard on July 28, 1980. This SD7 and yard slug team worked between June 1974 and November 1982 first in North Platte, N... (more)

Rio Grande's one and only 'chop nose' SD9 works at the hump yard in Grand Junction on June 14, 1981.

2 MP15's straddle a SL-1 slug unit, as they slowly shove cars over the hump at Pocatello, Idaho. As I recall, the engineer did not look all that thrilled with his slow paced assignment.