[[1]] Has a section in the first Ask The Answer Man about a Superman on TV in Earth-TV, which one was it.
It was released from 1976-1981
I assume that the Superman TV show that the questioner was asking about was Adventures of Superman (1952-1958). That DC Currents was from 1979, so what else could it be? The only other candidate for a Superman TV series at the time was the Filmation cartoon which I think was pretty much forgotten by 1979, while Adventures of Superman was still in reruns in many cities.
Good point. The questioner was asking about Superman the character, not a show named Superman. I guess we'll never know!
So it's impossible to make a page for Earth-TV unless we knew what TV show it was, and even then it would be hard to use that as a source.
Yes. If this was clearly referring to Adventures of Superman, I would support setting up an Earth-TV page, but alas, it's too vague.