Authors
- American Encyclopedia - History, I
- Dogs and All About Them
- A History of Science, III - Modern Development of the Physical Sciences
- Stories of Inventors
- Successful Stock Speculation
- The Story of Alchemy and the Beginnings of Chemistry
- A History of Science, II - The Beginnings of Modern Science
- The Dominion of the Air - The Story of Aerial Navigation
- A History of Science, I - The Beginnings of Science
- Aeroplanes and Dirigibles of War