I think the second paragraph of Ger's message was referring to Mad MAGAZINE imitations rather than the comic book mimics. I don't know about the rest of you, I would very much welcome an article or book on that subject.
Their heyday came immediately after the Atlas Implosion when the available talent outweighed the available jobs in comic books. Hence, a new (or new-ish) medium flourished to take advantage of the surplus. GREAT stuff (artistically) abounds and a book would be the perfect way to show it all off. Let's hope it happens.
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