Carolyn Keene is not actually an author - the pen-name was used by the Stratemeyer syndicate to write the many Nancy Drew books.
In 1929, Edward Stratemeyer, who was the man behind the Hardy Boys series, hired Mildred Wirt Bensen, a young journalist, to ghostwrite a new mystery series for young girls. - she ended up writing the text for 23 of the first 25 Nancy Drew books. At first, Edward himself was the author of Nancy drew, and he used the pseudonym Carolyn Keene.
