- The Standard Dictionary of Facts
- The circle of knowledge;: Essential facts of everyday interest in nature, geography, history, travel, government, science, invention, education, ... to read; easy to understand; easy to retain
- The Circle of Knowledge A Classified, Simplified, Visualized Book of Answers
- The Century Book of Facts; a Handbook of Ready Reference, Embracing History, Biography, Government, Law, Language, Literature, Invention, Science, Industry, Finance, Religion, Art, Education, Domestic
- The Standard Dictionary of Facts






