I read (and re-read) all of the Hardy Boys AND Nancy Drew. (is it true that they were written by the same author using a pen name??)
Sort of. Edward Stratemeyer wrote a lot himself, but mostly hired and guided other authors under a whole bunch of names.
The Stratemeyer Syndicate was the producer of a number of mystery series for children, including Nancy Drew, the Hardy Boys, the various Tom Swift series, the Bobbsey Twins, the Rover Boys, and others.
