30 Years of Adventure: A Celebration of Dungeons & Dragons is a 2004 publisher's retrospective written by Harold Johnson, Steve Winter, Peter Adkison, Ed Stark, and Peter Archer. It is an illustrated, behind-the-scenes history of the Dungeons & Dragons (D&D) fantasy tabletop role-playing game, issued by the game's publisher (Wizards of the Coast) to commemorate the game's 30th anniversary. Source: Wikipedia (en)