@jay jay posted:
In addition, this transformer was among the items of a friend and colleague who left me his collection when he passed in 2004. It was included with his 1956 freight set headed by a #2338 GP7, and he had acquired two KW transformers to run it. (His set didn't come with a transformer.) He never had American Flyer, so I don't know where he got it or how he used it.