The book is similar to the work of Charles Berlitz but Hassler never received mainstream recognition for his book like Berlitz did.
Publication of books such as The Roswell Incident by Berlitz and Moore in 1980, television shows and other media coverage perpetuated the UFO crash story and cover-up conspiracy beliefs.
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The first book on the Roswell UFO incident was The Roswell Incident (1980) by Charles Berlitz and William Moore.
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