Biography
- American Encyclopedia - Biography (205)
- A History of Aeronautics (195)
- Dogs and All About Them (193)
- The History of the Telephone (190)
- American Encyclopedia - History, II (182)
- The Story of Alchemy and the Beginnings of Chemistry (181)
- Putnam's Word Book (180)
- American Encyclopedia - Travel (176)
- A History of Science, II - The Beginnings of Modern Science (176)
- American Encyclopedia - History, I (175)
- William Penn (568)
- Hernando Cortez (564)
- George Gordon, Lord Byron (537)
- A (533)
- Peter the Great (522)
- Overland Journey to India (522)
- II. THE PROGRESS OF MODERN ASTRONOMY (510)
- Travels in Africa - Park Denham, Clapperton, Lander, and Others (503)
- Count Rumford (493)
- John Howard (493)
- A History of Aeronautics (1,403)
- American Encyclopedia - Biography (1,368)
- American Encyclopedia - History, I (1,326)
- The History of the Telephone (1,272)
- American Encyclopedia - Travel (1,257)
- Aeroplanes and Dirigibles of War (1,255)
- American Encyclopedia - History, II (1,242)
- The Story of Alchemy and the Beginnings of Chemistry (1,241)
- Dogs and All About Them (1,222)
- Putnam's Word Book (1,222)
- Hernando Cortez (5,136)
- William Penn (4,427)
- Count Rumford (4,304)
- Peter the Great (4,221)
- John Howard (4,155)
- War with Russia - Alliance of England, France and Turkey (4,069)
- Overland Journey to India (4,067)
- George Gordon, Lord Byron (4,057)
- Travels in Africa - Park Denham, Clapperton, Lander, and Others (3,888)
- II. THE PROGRESS OF MODERN ASTRONOMY (3,674)