The Bullpen creative team have worked closely with DK Books on both editorial and design. Alan brought his editorial and writing skills to many of DK’s comic-related titles such as Marvel Comics: 75 Years of Comic Art, The Spider-Man Chronicle, Marvel Avengers: The Ultimate Character Guide, DC Comics: A Visual Chronicle, DC Comics Encyclopaedia and Captain America: The Ultimate Guide to the First Avenger. The team has also worked on the Guardians of the Galaxy sticker book.