Authors
- American Encyclopedia - Travel (281)
- Aeroplanes and Dirigibles of War (237)
- The Mastery of the Air (234)
- American Encyclopedia - History, I (233)
- The Story of Alchemy and the Beginnings of Chemistry (231)
- American Encyclopedia - History, II (229)
- Putnam's Word Book (229)
- American Encyclopedia - Biography (226)
- Dogs and All About Them (224)
- A History of Aeronautics (212)
- H (408)
- Hernando Cortez (329)
- C (309)
- F (300)
- William Penn (222)
- Count Rumford (210)
- A (209)
- Travels in Africa - Park Denham, Clapperton, Lander, and Others (203)
- George Gordon, Lord Byron (201)
- John Howard (199)
- American Encyclopedia - Biography (3,746)
- A History of Aeronautics (3,685)
- American Encyclopedia - Travel (3,681)
- Putnam's Word Book (3,580)
- American Encyclopedia - History, I (3,529)
- Aeroplanes and Dirigibles of War (3,524)
- American Encyclopedia - History, II (3,483)
- Dogs and All About Them (3,448)
- The History of the Telephone (3,436)
- The Story of Alchemy and the Beginnings of Chemistry (3,379)
- Hernando Cortez (9,976)
- William Penn (8,674)
- Count Rumford (8,429)
- John Howard (8,339)
- Overland Journey to India (8,196)
- George Gordon, Lord Byron (8,146)
- Peter the Great (8,021)
- Travels in Africa - Park Denham, Clapperton, Lander, and Others (7,948)
- War with Russia - Alliance of England, France and Turkey (7,741)
- A (7,021)