From a quick search only 2 articules have been printed
Railroad Model Craftsman March 1971
Railroad Model Craftsman September 1978
There's also this book
It has the drawings for both cabs if you can afford it. You can also ask you local shop to get it for you if you don't want to pay by internet. Lots of paint scheme pictures, complete roster of units and where they went at printing time, lot of information about how they were built.
One of the drawings says it came from the November 1985 RMC, the other from March 1971.