=Boy Inventors' Series=
The author knows these subjects from a practical standpoint. Eachbook is printed from new plates on a good quality of paper and boundin cloth. Each book wrapped in a jacket printed in colors.
_Price 60c each_
1 Boy Inventors' Wireless Triumph
2 Boy Inventors' and the Vanishing Sun
3 Boy Inventors' Diving Torpedo Set
4 Boy Inventors' Flying Ship
5 Boy Inventors' Electric Ship
6 Boy Inventors' Radio Telephone
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