Editor’s note: “Behind the News” is the product of Sun staff assisted by the Sun’s AI lab, which includes a variety of tools such as Anthropic’s Claude, Perplexity AI, Google Gemini and ChatGPT. Dewey ...

First ed. published in 1916 by the Classification Division of the Library of Congress, under title: Classification. Class D: Universal and Old World history. "Additions and changes to July 1965": 55 p ...