The Boy Inventors' Radio Telephone by Richard Bonner
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page 1 of 210 (00%)
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[Illustration: (Frontispiece) Jack experienced an odd thrill as he
prepared to send the first spoken word ever exchanged between an airship and land--_Page_ 71.] THE BOY INVENTORS' RADIO- TELEPHONE BY RICHARD BONNER AUTHOR OF "THE BOY INVENTORS' WIRELESS TRIUMPH," "THE BOY INVENTORS AND THE VANISHING GUN," "THE BOY INVENTORS' DIVING TORPEDO BOAT," "THE BOY INVENTORS' FLYING SHIP," "THE BOY INVENTORS' ELECTRIC HYDROAEROPLANE," ETC., ETC. _WITH ILLUSTRATIONS BY_ _CHARLES L. WRENN_ NEW YORK HURST & COMPANY PUBLISHERS CONTENTS CHAPTER I. THE POWER OF THE AIR |
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