best ever!" they answered in a chorus. And here for the present we
will leave the Rover boys and say good-bye.

THE END

This Isn't All!

Would you like to know what became of the good friends you have made in
this book?

Would you like to read other stories continuing their adventures and
experiences, or other books quite as entertaining by the same author?

On the _reverse side_ of the wrapper which comes with this book, you
will find a wonderful list of stories which you can buy at the same
store where you got this book.

Don't throw away the Wrapper

_Use it as a handy catalog of the books you want some day to have.
But in case you do mislay it, write to the Publishers for a complete
catalog._

THE HARDY BOYS SERIES

By FRANKLIN W. DIXON

Illustrated. Every Volume Complete in Itself

The Hardy Boys are sons of a celebrated American detective, and during
vacations and their off time from school they help their father by
hunting down clues themselves.

THE TOWER TREASURE--A dying criminal confessed that his loot had been
secreted "in the tower." It remained for the Hardy Boys to clear up the
mystery.

THE HOUSE ON THE CLIFF--Mr. Hardy started to investigate--and
disappeared! An odd tale, with plenty of excitement.

THE SECRET OF THE OLD MILL--Counterfeit money was in circulation, and
the limit was reached when Mrs. Hardy took some from a stranger. A tale
full of thrills.

THE MISSING CHUMS--Two of the Hardy Boys' chums disappear and are
almost rescued by their friends when all are captured. A thrilling
story of adventure.

HUNTING FOR HIDDEN GOLD--In tracing some stolen gold the trail leads
the boys to an abandoned mine, and there things start to happen.

THE SHORE ROAD MYSTERY--Automobiles were disappearing most mysteriously
from the Shore Road. It remained for the Hardy Boys to solve the
mystery.

THE SECRET OF THE CAVES--When the boys reached the caves they came
unexpectedly upon a queer old hermit.

THE MYSTERY OF CABIN ISLAND--A story of queer adventures on a rockbound
island.

THE GREAT AIRPORT MYSTERY--The Hardy Boys solve the mystery of the
disappearance of some valuable mail.

WHAT HAPPENED AT MIDNIGHT--The boys follow a trail that ends in a
strange and exciting situation.

WHILE THE CLOCK TICKED--The Hardy Boys aid in vindicating a man who has
been wrongly accused of a crime.

FOOTPRINTS UNDER THE WINDOW--The Smuggling of Chinese into this country
is the bas