But when do characters outside of Abin Sur, Sinestro, and Guardians appear? From a little research, it looks like Kilowog's first appearance is in 1986. When is the first story that features more than one member of the Corp or mentions the Corp the way we know it today?
I guess what I'm getting at is that it seems like the idea of the current Corp wasn't developed until much later in the history of GL. I was wondering if that's true.