For years I've been covering the very sensitive and thorny issue of the theft of Jack Kirby's artwork on my blog . I say sensitive and thorny because when the issue is brought up, quite a few collectors and dealers will do their best to shut it down.  Why? Because bringing this to light also brings to light both the underground and overground selling, trading and dealing in stolen art that has been going on for decades now. And the people who've engaged in these practices don't like being exposed. It's not just Jack Kirby who has suffered from this. From Joe Simon to Brian Bolland, from Steve Bissette to Neal Adams, from Bernie Wrightson to Alan Kupperberg, from Frank Miller to Ross Andru - almost any artist, especially those working in the American comic book industry, have suffered from seeing their art stolen from companies they worked for and then seeing it openly on sale. At times when those artists have approached the dealers or the persons selling, they'