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The Thirteenth Pearl is the fifty-sixth volume in the Nancy Drew Mystery Stories series. It was first published in 1979 under the pseudonym Carolyn Keene. The actual author was ghostwriter Harriet Stratemeyer Adams. The Thirteenth Pearl is the end of the original 56-book series published by Grosset & Dunlap. Subsequent volumes were published by Simon & Schuster.
A Question of Guilt is a 1996 Hardy Boys and Nancy Drew Supermystery crossover novel.
Copper Canyon Conspiracy is a Hardy Boys and Nancy Drew Supermystery crossover novel. It was first published in 1994.
At All Costs is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1997.
Exhibition of Evil is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1997.
Nightmare in New Orleans is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1997.
Murder on the Fourth of July is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1996.
Secrets of the Nile is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1995.
Dead on Arrival is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1995.
Danger Down Under is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1995.
Hollywood Horror is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1994.
Passport to Danger is a Nancy Drew and Hardy Boys Supermystery crossover novel. It is the 19th book in the series and was first published in July 1994 by Archway Paperbacks.
Hits and Misses is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1993.
Courting Disaster is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1993.
Tropic of Fear is a Nancy Drew and Hardy Boys Supermystery crossover novel, issued under the Carolyn Keene pseudonym. It was published in 1992.
Spies and Lies is a 1992 Nancy Drew and the Hardy Boys Supermystery crossover novel. It was written by Tracey West under the usual pseudonym Carolyn Keene.
High Survival is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1991.
Best of Enemies is a Nancy Drew and Hardy Boys Supermystery crossover novel, published in 1991.
Mystery Train is a Nancy Drew and Hardy Boys Supermystery crossover novel. It was published in 1990.
Buried in Time is a Nancy Drew and Hardy Boys Supermystery crossover novel.
