Authors
- American Encyclopedia - History, I
- A History of Science, III - Modern Development of the Physical Sciences
- Successful Stock Speculation
- A History of Science, I - The Beginnings of Science
- A History of Aeronautics
- International Finance
- Putnam's Word Book
- A History of Science, II - The Beginnings of Modern Science
- The History of the Telephone
- Stories of Inventors
- CHAPTER XI. ARMOURED AEROPLANES
- CHAPTER IV. AIRSHIPS OF WAR
- CHAPTER XIX. THE NAVIES of THE AIR
- CHAPTER VIII. SCOUTING FROM THE SKIES
- CHAPTER VII. AEROPLANES OF WAR
- CHAPTER V. GERMANY'S AERIAL DREADNOUGHT FLEET
- CHAPTER X. BOMB-THROWING FROM AIR-CRAFT
- CHAPTER II. THE MILITARY USES of THE CAPTIVE BALLOON
- CHAPTER XVII. WIRELESS IN AVIATION
- CHAPTER XII. BATTLES IN THE AIR