The Master Key: An Electrical Fairy Tale, Founded Upon the Mysteries of Electricity and the Optimism of Its Devotees is the story about a boy, Rob Joslyn, who is an electrical experimenter encouraged by his father. Soon a network of wires run throughout his and loses track of the elaborately interconnected wires. A bright flash and a being appears and tells Rob that he has accidentally "touched the Master Key of Electricity." L. Frank Baum was an author of children's books, best known for writing The Wonderful Wizard of Oz. He wrote 55 novels in total, plus four "lost" novels, 83 short stories, over 200 poems, and more.