The Century Book of Facts: A Handbook of Ready Reference, Embracing History, Biography, Government, Law, Language, Literature, Invention, Science

First published at the turn of the 20th century, The Century Book of Facts was designed as a comprehensive compendium for the home library. During an era when reference material was shifting toward accessible, single-volume formats, Henry Woldmar Ruoff curated this work to provide the general public with concise information on subjects ranging from civics and science to literature and biography. It was marketed as an essential tool for the modern, informed citizen who required quick, verified data in an increasingly complex and industrializing world.

The book’s design reflects the pedagogical style of the late Victorian and Edwardian periods, prioritizing structured sections and clear, factual summaries. It served as a precursor to modern general-interest encyclopedias, reflecting the period's optimism regarding universal education and the democratization of knowledge. While the specific layout evolved through various editions, the work was generally well-received by its contemporary audience as a reliable, if modest, alternative to the sprawling multi-volume encyclopedias of the time.