E-text prepared by Roger Frank and the Online Distributed Proofreading Team (http://www.pgdp.net) THE AIR MYSTERY OF ISLE LA MOTTE E. J. CRAINE Cleveland, Ohio New York, N. Y. MADE IN U. S. A. The World Syndicate Publishing Company PRESS OF THE COMMERCIAL BOOKBINDING CO. CLEVELAND This is the first book of the Sky Buddies, Jim Austin and Bob Caldwell and their plane, properly christened “HER HIGHNESS” in which they encounter many thrilling and exciting adventures. Contents The Step-brothers The Three Mysteries Thundering Waters A Mysterious Find A Discovery A Capture