American Radiator Conditioning System info

JeremyG

I'm looking for info on the American Radiator Conditioning System that was originally installed in my 1935 house. So far, this ad has been my biggest source of info.

It appears that the system had a humidifier, filter and fresh air intake. There are some remnants of ducts in the basement, along with a capped fresh air intake. There's one baseboard grille in the living room, though the previous owner told me that one was removed from the dining room when he had the floors repaired. There's also this switch plate in the dining room, which is why I was able to find out anything about the system:


Any ideas on where to find literature, photos and so on?

Thanks!
Jeremy