Jason Rekulak 
Impossible Fortress [EPUB ebook] 

It's 1987. Billy Marvin, the tallest boy in ninth grade, has just witnessed history. Wheel of Fortune presenter Vanna White is on the cover of Playboy. Billy and his friends, Alf and Clark, know that if they can get hold of the magazine, their world will change. For ever. But as Billy says, 'No shopkeeper in America was going to sell Playboy to a fourteen-year-old boy.'As they set out on their mission to find the most wanted images in America, they're blissfully unaware of the dangers, dramas and garbage dumpsters that lie ahead. And of how a girl called Mary might just change one of their lives. For ever.