The Message in the Hollow Oak

The Message in the Hollow Oak
Original edition cover
AuthorCarolyn Keene
IllustratorRussell H. Tandy
LanguageEnglish
SeriesNancy Drew Mystery Stories
GenreJuvenile literature
PublisherGrosset & Dunlap
Publication date
1935, 1972
Publication placeUnited States
Media typePrint (Hardback & Paperback)
Preceded byThe Clue of the Broken Locket 
Followed byThe Mystery of the Ivory Charm 

The Message in the Hollow Oak is the twelfth volume in the Nancy Drew Mystery Stories series. It was written under the pseudonym Carolyn Keene and first published in 1935.