The Hardy boys are sons of a celebrated American detective and from their father they inherit zeal to bring criminals to justice. After school and during their vacation days, they follow up clues they unearth themselves.
Footprints under the window: 1933 first edition hardcover with 218 pages. In good condition. The dust jacket has wear around edges and some paper loss on spine. Name of previous owner in front.
The secret warning: 1938 first edition hardcover with 220 pages. In good condition. Dust jacket has slight edgewear.
NB. Note added by seller on Monday 9th October: these are not first editions as stated above.
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