Authors
- Putnam's Word Book
- A History of Science, III - Modern Development of the Physical Sciences
- International Finance
- The History of the Telephone
- American Encyclopedia - Biography
- Dogs and All About Them
- The Story of Alchemy and the Beginnings of Chemistry
- The Mastery of the Air
- Stories of Inventors
- A History of Aeronautics
- Dogs and All About Them
- Aeroplanes and Dirigibles of War
- Putnam's Word Book
- Stories of Inventors
- A History of Science, IV - Modern Development of the Chemical and Biological Sciences
- The History of the Telephone
- A History of Aeronautics
- American Encyclopedia - Biography
- Elements of Foreign Exchange
- Successful Stock Speculation