Lee's ABC's books addressed the private-labeled brands, like ITT and Stromberg-Carlson (Comdial). Western Electric products were still taboo at the time, so there's not much information about it in the Lee's books.

Of course, 1A2 is pretty much universal with regard to operation/wiring between brands but many of the specialty items, like intercoms and exclusion were handled differently.


Ed Vaughn, MBSWWYPBX