A letter from DC Comics’ World’s Finest #192 published in March 1970, a few years before Marvel Comics put out What If? #1, cover-dated February 1977.
I’m trying to picture this issue of What If? with those other titles. “Conan…walking the Earth of today? IMAGINE THAT!” Or “What’s NOT Happening? Any more Conan comics from Marvel!” Or, you know, something like that.
I also like the implication in the editor’s reply that the only thing keeping them from publishing an ongoing Imaginary Stories series is the inability to decide on a title. “Gee, we’d like to, James C., but we here at 909 Third Avenue can’t settle on a name. Imagine That? No, no…. Wait, how ’bout…Just Imagine? …Nah, who’d buy that?”