Hellboy 10th Anniversary Sketchbook SIGNED Mike Mignola to Denys Cowan Remarque Listing Description: Up for sale is a rare, limited-edition Hellboy 10th Anniversary (1994–2004) A Book of Drawings by Mike Mignola sketchbook, originally released exclusively for San Diego Comic-Con 2004 in a limited print run of only 2,000 copies. This copy features exceptional creator-to-creator provenance, coming directly from the estate/collection of legendary comic artist and Milestone Media co-founder Denys Cowan. The interior color art plate is hand-signed and inscribed by Mike Mignola with a customized speech bubble remark: "To Denys -- Thanks PAL!"