The Boy Inventors' Radio Telephone

by Richard Bonner

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.