Frank and Joe Hardy are sons of a celebrated detective. Often the boys help him in his investigations. In their spare hours and during vacations they follow up clues “on their own hook.” These activities lead them into many strange adventures and dangerous situations. Yet their efforts are usually successful in tracking down criminals. These stories are packed with action, adventure and mystery. THE HARDY BOYS STORIES By FRANKLIN W. DIXON THE TOWER TREASURE THE HOUSE ON THE CLIFF THE SECRET OF THE OLD MILL THE MISSING CHUMS HUNTING FOR HIDDEN GOLD THE SHORE ROAD MYSTERY THE SECRET OF THE CAVES THE MYSTERY OF CABIN ISLAND THE GREAT AIRPORT MYSTERY WHAT HAPPENED AT MIDNIGHT WHILE THE CLOCK TICKED FOOTPRINTS UNDER THE WINDOW THE MARK ON THE DOOR THE HIDDEN HARBOR MYSTERY A FIGURE IN HIDING TED SCOTT FLYING STORIES By FRANKLIN W. DIXON Illustrated. Every Volume Complete in Itself. You’ll like Ted Scott. He’s a daring young American whose feats of flying thrill the whole world, but with it all he keeps a level head on his shoulders. The whole flying series has been inspired by recent aerial exploits and is dedicated to Lindbergh, Commander Byrd, Clarence Chamberlin and other heroes of the skies. OVER THE OCEAN TO PARIS RESCUED IN THE CLOUDS OVER THE ROCKIES WITH THE AIR MAIL FIRST STOP HONOLULU THE SEARCH FOR THE LOST FLYERS SOUTH OF THE RIO GRANDE ACROSS THE PACIFIC THE LONE EAGLE OF THE BORDER FLYING AGAINST TIME OVER THE JUNGLE TRAILS LOST AT THE SOUTH POLE THROUGH THE AIR TO ALASKA FLYING TO THE RESCUE DANGER TRAILS OF THE SKY FOLLOWING THE SUN SHADOW BATTLING THE WIND BRUSHING THE MOUNTAIN TOP CASTAWAYS OF THE STRATOSPHERE Spotlight Books for Boys _From 12 to 16 Years_ MYSTERY HOUSE _R. J. Burrough_ Another Smiley Adams story combines mystery and sports, with adventure aplenty in the deserted house on an island one dark and stormy night. THE LONE RANGER _G. DuBois_