About.com has an article on Benson that talks about Benson's early years as a writer and her work as author of twenty-three of the first twenty-five Nancy Drew books.
The Associated Press sent out to all its subscribers an obituary for Mildred Wirt Benson.
Contemporary Authors Online, Gale, 2003.
Iowa Women's Archives at the University of Iowa Libraries houses Benson's papers, including biographical works, correspondence, manuscripts, and a memory book written between 1922 and 1928.
"Mildred (Augustine Wirt) Benson." Major Authors and Illustrators for Children and Young Adults, 2nd ed., 8 vols. Gale Group, 2002. Reproduced in Biography Resource Center. Farmington Hills, MI.: The Gale Group, 2003. Document Number: K1617001009.
The Nancy Drew web site is for fans of all ages. Features include a Nancy Drew FAQ (in case you have questions), details on how the Nancy Drew character evolved over the years, a biography of Carolyn Keene that lists all who wrote under that pen name, and Nancy Drew Strategy Guides.
The Nancy Drew Sleuth web site published a Mildred Wirt Benson Memorial Edition, which contains a pictorial retrospective of Ms. Benson. As a memorial web site is being built, fans both young and old can record their memories.
Salon.com asks the question: Who was Carolyn Keene? In this 1999 interview with Mildred Wirt Benson, she talks about writing books for the Nancy Drew series and what sort of person she created in Nancy Drew.
Selected Books about Carolyn Keene (Mildred Wirt Benson)
Authors & Artists for Young Adults, Volume 12. Detroit, MI: Gale, 1994.
Mason, Bobbie Ann, The Girl Sleuth: A Feminist Guide. New York, NY: Feminist Press, 1975; reprinted University of Georgia Press, 1995.