The 14-book series centered around the world of Oz and its lore is the basis for any live-action adaptations. Here it is, in chronological order.

are whisked away from their house to the magical Land of Oz. They follow the Yellow Brick Road to the Emerald City to meet the Wizard, and on the way, they meet a Scarecrow who wants a brain ...

The Wizard of Oz was an entertainment franchise before franchises were a concept. The original 14-book series by Baum is a rich tapestry of dark fantasy with bizarre characters and settings.