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Series: The Hardy Boys and Tom Swift Ultra Thriller

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  • Series: The Hardy Boys and Tom Swift Ultra Thriller Series Record # 27072
  • Sub-series of: Tom Swift
  • Webpages: tomswift.net
  • Note: Also in series The Hardy Boys. Published in paperback only. TomSwift.net covers this crossover series along with the contemporary fourth Tom Swift series (Tom Swift [3]) and notes that its content is closer to Tom Swift, although it is credited to Franklin W. Dixon, pseudonymous author of The Hardy Boys.
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