Steven Spielberg's script for War Horse and the jacket Albert wears in the film are among the stars of a new show at Manchester's Imperial War MuseumThis weekend the Imperial War Museum North is opening its doors to young readers across the country, as its exciting exhibition Once Upon a Wartime moves to Mancherster. Learn about the true events that inspired classics such as Nina Bawden's Carrie's War or Robert Westall's The Machine Gunners. Travel to East Africa with Bernard Ashley's Little Soldier or go back in time with Michael Morpurgo's bestselling War Horse. Some of the books come with objects associated with them. You can see the painting that inspired Morpurgo to write War Horse, explore a model of ...