It may be that the actual casting was done by Adams. & Son but. I believe the E-5s were Pomona Valley products. They had DZ and TCZ EA/B Shovelnoses units and the General Pershing Zephyr 9908 as well as matching train sets.
I saw the Corbin unit in his basement and other examples at the Burlington Junior outside third rail layout in the basement of the funeral home in Berwyn, Illinois. The Burlington Junior had a scratch built Aeolus that was very well done as well.....wonder what became of that equipment/
Charlie Vlk