"Tom Swift and His Wireless Message; Or, The Castaways of Earthquake Island" by Victor Appleton is a novel likely written in the early 20th century. This adventure story follows the young inventor Tom Swift as he receives a telegram from Mr. Hosmer Fenwick, an inventor in trouble with his new electric airship. Tom’s journey leads him to Philadelphia to assist Fenwick, and along the way, he encounters a mix of humorous, exciting, and potentially dangerous situations, characteristic of the Tom Swift series. The opening portion introduces Tom Swift working on his airship in his machine shop when he receives a message from Eradicate Sampson, a comical character accompanied by his mule, Boomerang. He learns that Fenwick needs his urgent assistance with an electric airship that's failing to take off. After some discussion with his father, Tom decides to travel to Philadelphia in his newly designed monoplane, the Butterfly. The narrative sets the stage for a series of inventive adventures, showcasing Tom's resourcefulness as he navigates challenges that come his way, including confrontations with the town bully and preparations for a significant flight. (This is an automatically generated summary.)