Before War Horse trots into the Fox Cities Performing Arts Center on June 25, find out where the touching story of friendship all began. Michael Morpurgo wrote the children’s novel about the bond between a boy and his horse in war-torn Europe that inspired the National Theatre and the Handspring Puppet Company’s acclaimed production. A Tony Award for Best Play and a Steven Spielberg movie later, the national tour is galloping across the country. Morpurgo sat down to talk about where the inspiration for his book came from and how the success of his sleeper hit (the book was published in 1982) has surprised him. Don’t miss this stage spectacle, which plays Appleton through June 30.