Appleton, Victor. Tom Swift series

Tom Swift and His Photo Telephone is a novel about the adventures of Tom Swift, a young inventor who builds a revolutionary new device - a photo telephone that can transmit images over long distances. Tom's invention draws the attention of wealthy investors, who want to use the photo telephone for their own purposes. But when Tom discovers that they have dishonest intentions, he sets out to stop them, using his resourcefulness and ingenuity to outwit his opponents. With the help of his friends, Tom battles to protect his invention and ensure that it is used for the good of all

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