The Simpsons Comic Book Guy Let Your Geek Flag Fly 16x20 inch poster autographed, doodled with Bart Simpson's head and dated 2007 in black marker by Matt Groening, the legendary cartoonist and creator of the show. Matted in white and framed with plexiglas in black wood to 20x24 inches, ready to hang with attached sawtooth hanger. Obtained at 2007 Comic-Con. With certificate of authenticity from AutographsForSale.com. ONLY ONE AVAILABLE FOR SALE.