Dennis V.N. McCarthy (McCarthy, Dennis V.N.)

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  via
  Protecting the President: The Inside Story of a Secret Service Agent
  by Philip W. Smith, Dennis V.N. McCarthy
  Softcover, Bantam Books, ISBN 0440171636 (0-440-17163-6)
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  Protecting the President: The Inside Story of a Secret Service Agent Vice Agent
  by Philip W. Smith, Dennis V.N. McCarthy
  Hardcover, Harpercollins, ISBN 0688054226 (0-688-05422-6)