The Ill-Starred R-101

John G. Fuller.  The Airmen Who Would Not Die.  (Berkley, 1979, 1980).

According to Fuller's book, the cause of the airship's crash was finally revealed when a psychic contacted the spirits of the airmen who had died in the disaster.  No less an aviation authority than Charles H. Gibbs-Smith wrote a note endorsing Fuller's findings and their unusual source.  Pretty spooky, eh kids?