First Comics E-Man stickers! feel like the Joe Staton art on the header card is recycled from a subscription ad or somesuch, so it doesn't necessarily imply that there are matching American Flagg!, Jon Sable, Freelance, and...God help us all... WARP sticker sets! On the other hand, those aren't that much less likely. Any of you folks out there in cyberspace ever seen these?
I've got to say that, if you're actually an E-Man fan, these are kinda disappointing, with your only actual art featuring the titular hero being tiny reproductions of one cover and a house ad, while Teddy Q gets comparative star treatment. I don't know how these would look to the hypothetical non-fan sticker collector during that era's sticker craze, but maybe an authority in that area will chime in in the comments.