In the April, 2012 issue of TRAINS magazine on page 71 it reads:
"The A-B-A lash-up (considered a single loclmotive in those early days of dieselization) newly resplendent in Santa Fe's famous red, gold, and silver "warbonnet" scheme........"
What's a "Lash-up"?
I don't know Rich, your argument about that term is running out of steam!
- walt