The Master Key

Set against the backdrop of an industrializing world, this children's novel follows young Rob Joslyn, an aspiring engineer whose experiments with electricity catch the attention of the Daemon of Electricity. Over three weeks, Rob receives extraordinary inventions that transform his life. Blending elements of fantasy and science, the story reflects Baum's imaginative vision and explores themes of creativity and discovery. Though less known than his Oz series, this work remains a cherished classic, appealing to both children and adults who value the magic in everyday life.