Indiana Jones Chronicles" explains how Indiana becomes solitary and less idealistic following his service in World War I. In "Indiana Jones and the Kingdom of the Crystal Skull", Jones is older and wiser, whereas his sidekicks Mutt and Mac are youthfully arrogant and greedy, respectively. Indiana Jones is modeled after the strong-jawed heroes of the matinée serials and pulp magazines that George Lucas and Steven Spielberg enjoyed in their childhoods (such as the Republic Pictures serials, and the Doc Savage series). Sir H. Rider Haggard's safari guide/big game hunter Allan Quatermain of "King Solomon's Mines", who dates back to 1885, is a
Indiana Jones and the Kingdom of the Crystal Skull by Luke Ross (""), children's novelizations of all four films, the "Indiana Jones Adventures" comic book series aimed at children, and the official "Indiana Jones Magazine". Scholastic featured Indiana and Mutt on the covers of "Scholastic News" and "Scholastic Maths", to the concern of parents, though Jack Silbert, editor of the latter, felt the film would interest children in archaeology. The film was released on Blu-ray Disc and DVD in North America on October 14, 2008 and in the U.K. on November 10. This release includes a two-disc edition Blu-ray, a two-disc special-edition DVD, and a one-disc edition DVD. The