Edward L. Stratemeyer was an American publisher and writer of children's fiction. He was one of the most prolific writers in the world, producing in excess of 1,300 books himself, selling in excess of 500 million copies. He also created many well-known fictional book series for juveniles, including "The Rover Boys", "The Bobbsey Twins", "Tom Swift", "The Hardy Boys", and "Nancy Drew" series, many of which sold millions of copies and are still in publication today.