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 ...

Rev. ed. of: Classification. Class C. Auxiliary sciences of history. 4th ed. 1993.

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 ...