book cover of The Clue of the Black Keys
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The Clue of the Black Keys

(1951)
(Book 28 in the Nancy Drew Mystery Stories series)
A novel by

 
 
Terry Scott, a young archaeology professor, seeks Nancy's help in unearthing a secret of antiquity which can be unlocked by three black keys. While on an archaeological expedition in Mexico, terry and Dr. Joshua Pitt came across a clue to the buried treasure. The clue was a cipher carved on a stone tablet.

Genre: Young Adult Fiction

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Used availability for Carolyn Keene's The Clue of the Black Keys

Hardback Editions

January 1951 : USA Hardback
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Title: The Clue of the Black Keys (Nancy Drew #28)
Author(s): Carolyn Keene
ISBN: 0-448-09528-9 / 978-0-448-09528-8 (USA edition)
Publisher: Grosset & Dunlap
Availability: Amazon   Amazon UK   Amazon CA   


September 1972 : UK Hardback
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Title: Clue of the Black Keys (Nancy Drew mystery stories / Carolyn Keene)
Author(s): Carolyn Keene
ISBN: 0-00-160420-1 / 978-0-00-160420-9 (UK edition)
Publisher: HarperCollins Distribution Services
Availability: Amazon   Amazon UK   


Paperback Editions

June 1979 : UK Paperback
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Title: The Clue of the Black Keys (Nancy Drew mystery stories)
Author(s): Carolyn Keene
ISBN: 0-00-691575-2 / 978-0-00-691575-1 (UK edition)
Publisher: Armada
Availability: Amazon   Amazon UK   


August 1974 : USA Paperback
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Title: Nancy Drew 28: The Clue of the Black Keys GB
Author(s): Carolyn Keene
ISBN: 0-448-19528-3 / 978-0-448-19528-5 (USA edition)
Publisher: Grosset & Dunlap
Availability: Amazon   Amazon UK   Amazon CA   


Kindle Editions

January 1951 : USA, Canada, UK Kindle edition
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Title: Nancy Drew 28: The Clue of the Black Keys (Nancy Drew Mysteries)
Author(s): Carolyn Keene
Publisher: Grosset & Dunlap
Availability: Amazon   Amazon UK   Amazon CA