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HE HARDY BOYS are sons of a celebrated American detective, and during vacations and their off time from school they help their rather 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 make an astonishing discovery that cleared up the mystery.

THE HOUSE ON THE CLIFF—The house had been vacant and was supposed to be haunted. 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 take a motor trip down the coast. They disappear and are almost rescued by their friends v/hen all are captured. A thrilling story of adventure.

HUNTING FOR HIDDEN GOLD—Mr. Hardy is injured in tracing some stolen gold. A hunt by the boys leads to an abandoned mine, and there things start to happen. A western story all boys will enjoy.

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.