The Air Mystery of Isle La Motte

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
I The Step-brothers
II The Three Mysteries
III Thundering Waters
IV A Mysterious Find
V A Discovery
VI A Capture
VII A Tail Spin
VIII Ablaze
IX The Mail Must Go Through
X Danger
XI The Cry For Help
XII Detectives