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 1902 by the Classification Division of the Library of Congress. "Additions and changes to October 1964": 61 p. at end.

At head of title: Library of Congress. First edition 1902 and second edition, 1910, were the work of Mr. Charles Martel, then chief classifier. Additions and revisions have been made by Miss H.K.