THE HARDY BOYS

Mystery
Stories

By FRANKLIN N. DIXON

All boys from 11 to 15 who like lively adventure stories, packed with mystery and action, will want to read every one of the exciting Hardy Boys stories listed below. Sons of a famous American detective, the Hardy boys help solve many thrilling mysteries after school hours and during vacations, as they follow up the clues they unearth in their quest to bring criminals to justice.

Now Available:

1. THE TOWER TREASURE
2. THE HOUSE ON THE CLIFF
3. THE SECRET OF THE OLD MILL
4. THE MISSING CHUMS
5. HUNTING FOR HIDDEN GOLD
6. THE SHORE ROAD MYSTERY
7. THE SECRET OF THE CAVES
8. THE MYSTERY OF CABIN ISLAND
9. THE GREAT AIRPORT MYSTERY
10. WHAT HAPPENED AT MIDNIGHT
11. WHILE THE CLOCK TICKED
12. FOOTPRINTS UNDER THE WINDOW
13. THE MARK ON THE DOOR
14. THE HIDDEN HARBOR MYSTERY
15. THE SINISTER SIGN POST
16. A FIGURE IN HIDING
17. THE SECRET WARNING
18. THE TWISTED CLAW
19. THE DISAPPEARING FLOOR
20. THE MYSTERY OF THE FLYING EXPRESS
21. THE CLUE OF THE BROKEN BLADE
22. THE FLICKERING TORCH MYSTERY
23. THE MELTED COINS
24. THE SHORT-WAVE MYSTERY
25. THE SECRET PANEL
26. THE PHANTOM FREIGHTER
27. THE SECRET OF SKULL MOUNTAIN
28. SIGN OF THE CROOKED ARROW
29. THE SECRET OF THE LOST TUNNEL
30. THE WAILING SIREN MYSTERY

GROSSET & DUNLAP Publishers NEW YORK

The Rick Brant Science-Adventure Stories

BY JOHN BLAINE