Leap back a million years into the dark prehistoric ages. Speed through the dangers of outer space beyond the stratosphere at a thousand miles a minute. Meet the grotesque machine men of Mars. Break into the bounds of the Fourth Dimension. You will meet in these thrilling, fascinating stories many incredible beings and astounding sights that will stagger your imagination. THE MYSTERY MEN OF MARS Seventy million miles from home! Three men--a daring scientist and two adventurous boys--take off from the earth in a steel and aluminum sphere that sails through space at 20 miles a second. On the planet Mars they face destruction at the hands of beings who resemble mechanical bugs more than men! A THOUSAND YEARS A MINUTE In the world of a million years ago--whence they have been propelled by an old professor's invention--Alan and Ted find themselves pitted against the dinosaurs, mammoths and savage ape men of a lost world. THE LAND OF NO SHADOW Through a violet coil frame in Professor Arronson's laboratory Ted and Alan leap into the gray and terrifying land of the Fourth Dimension. There they are shadowed by the ghostly forms of menacing, bodiless shapes! GROSSET & DUNLAP, PUBLISHERS, NEW YORK ZANE GREY BOOKS FOR BOYS Packed with all the thrill and color and action that have made this author famous! THE "KEN WARD" STORIES The Young Forester Kenneth Ward, a young eastern lad just out of preparatory school, goes west on his summer vacation to join a friend, Dick Leslie, a government forest ranger in Arizona. Ken, honest, loyal but hot-headed runs into plenty of excitement and trouble when he finds that a big lumber steal is going on. The Young Lion Hunter Ken Ward and his kid brother, Hal, spend a summer on a forest preserve in Utah with Ken's pal Dick Leslie. The government rangers are out after the mountain lions and the boys from the east are glad to share in the thrilling work. The Young Pitcher When Ken Ward entered Wayne College to pursue his study of forestry he discovered that as a freshman he was on the bottom rung and had to fight to win his way to recognition. His first claim to fame comes when he pummels a prominent sophomore in self-defense. Ken Ward in the Jungle Ken Ward and his younger brother Hal take a trip into the wilds of Mexico--Ken to try his hand at field work in the jungle and Hal, who is ambitious to become a naturalist, to collect specimens. The boys set out to solve the mysteries of the Santa Rosa River, an unknown course of about a hundred and seventy-five miles through uncharted jungle. STORIES OF BASEBALL _Zane Grey's baseball is as real, as dramatic and as thrilling as the western stories that made him famous._ The Redheaded Outfield The Redheaded Outfield--three fiery-pated players who introduce a little boxing and plenty of comedy into the game will delight you. The Rube--who is all that a rube should be--appears in a whole series of these stories and is a character you won't forget.