Edward Stratemeyer, the founder of the Syndicate, hired writers to write the manuscripts for the Nancy Drew books using the pseudonym Carolyn Keene. The writers initially were paid $125 for each book and were required by their contract to give up all rights to the work and to maintain confidentiality.
- Carolyn Keene on Wikipedia
- on Goodreads
- Martin, Douglas (May 30, 2002). "Mildred Benson Is Dead at 96; Wrote 23 Nancy Drew Books". The New York Times. Retrieved May 17, 2019.