Comments === 
 As I stated in the previous RfC about Michael Lucas's biography, manufacturer PR material about a product is generally acceptable as an encyclopedic source.  If editors who disagree with the company position find evidence to the contrary in other published sources that meet WP:V - such as a film review in an established magazine or newspaper - then that opinion may be cited alongside the manufacturer statement.  While it may be possible that the film producers cited the public domain novel instead of the copyrighted film for legal reasons, it would violate WP:NOR to advance that view without a verifiable source for the claim and it would violate WP:NPOV to exclude the production company's position.   

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