This strange flat-faced machine was one of two unique AB6 diesels built by EMD in 1940 for the Rock Island. Basically modified E6 B-units with cabs, they were designed to run as trailing units on ... (more)

A real oddball, Rock Island EMD AB6 is accelerating out of Chicago's La Salle Street Station with a bi-level commuter train.

Come On Guys, Let's Go An AB6 had an E6B carbody modified with a single 1000 h.p. engine, windows and controls at one end, baggage compartment, and steam generator. Only two were built by... (more)

In 1942 Rock Island had EMD built two special E-6Bs with a blunt nose cab and baggage compartment exclusively to power the Colorado Springs section of the Rocky Mountain Rocket. After cutting Colo... (more)

Another Rock Island commuter service oddball--AB6 750--arrives at Joliet with an early afternoon commuter run. I was in 8th Grade and just getting to know about rail photography.