The cowboys of the X Bar X Ranch are real cowboys, on the job when required, but full of fun and daring--a bunch any reader will be delighted to know. THE X BAR X BOYS ON THE RANCH THE X BAR X BOYS IN THUNDER CANYON THE X BAR X BOYS ON WHIRLPOOL RIVER THE X BAR X BOYS ON BIG BISON TRAIL THE X BAR X BOYS AT THE ROUND-UP THE X BAR X BOYS AT NUGGET CAMP THE X BAR X BOYS AT RUSTLER'S GAP THE X BAR X BOYS AT GRIZZLY PASS THE X BAR X BOYS LOST IN THE ROCKIES THE X BAR X BOYS RIDING FOR LIFE THE X BAR X BOYS IN SMOKY VALLEY * * * * * GROSSET & DUNLAP, _Publishers_, NEW YORK 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 basis of this story in which the boys find thrills and excitement aplenty. * * * * * GROSSET & DUNLAP, Publishers, NEW YORK TED SCOTT FLYING STORIES By FRANKLIN W. DIXON * * * * * Illustrated. Each Volume Complete in Itself. * * * * *