In the following pages, Jim Ray, talented in his work of presentation and a conscientious student of aviation, presents a chain of highlights in the progress of American aËronautics. The work as a whole is directed toward a sound conception of the steps which have been taken in aircraft development. In so far as possible, without being exhaustive, Mr. Ray has portrayed the engineering advancement which underlies the structure of our swiftly developing air age. The reader who thoroughly digests the text and illustrations of this book will find that it is an orderly and faithful guide.