Mildred A. Wirt (July 10, 1905 - May 28, 2002)
Mildred Augustine Wirt Benson (aka: Mildred Benson)
Writing under Stratemeyer Syndicate pen name Carolyn Keene from 1929 to 1947, she contributed to 23 of the first 25 originally published Nancy Drew mysteries. She was one of 28 individuals who helped produce the Syndicate's Nancy Drew mystery books from 1929 to 1984.
Edward Stratemeyer hired Benson in 1926. She was paid a flat fee of $125 for the first Nancy Drew book written using an outline provided by the syndicate.
Other pseudonyms:
Frank Bell
Joan Clark
Julia K. Duncan
Alice B. Emerson
Frances K. Judd
Don Palmer
Helen Louise Thorndyke
Dorothy West
Ann Wirt