Ah, Smash! And it certainly was. I've got a near-complete set.
I've got a 1965 issue of Smash that features an original Hulk story.
Here's Batboy and Rubin in animated form: http://www.comicmix.com/comicmix-six/2011/04/03/comicmix-six-stories-we-thought-were-april-fools-jokes-but-werent/5/(and sorry for posting this in the comments, but I don't know of a better option.)