Franklin W. Dixon is a pen name used by a variety of authors writing for the Stratemeyer Syndicate, most famously for the Hardy Boys series.
Please do not combine the ghostwriters with this pseudonym.
Leslie McFarlane is one of the better known of the ghostwriters hired by the Syndicate.
Like Nancy Drew, Tom Swift, Bobbsey Twins, and other major Syndicate series, the creator of the character is Edward Stratemeyer. He then wrote outlines and hired ghostwriters. He then edited the books and marketed them. The Syndicate was the owner of the work.