Essential Events is a high quality, easy-to-navigate series on topics that often have cumbersome, thick books. This series has clear, concise language, wonderful photos, and clarifying sidebars that further define and explain some of the historical people, events, or concepts. Each volume has a time line, essential facts, additional resources, glossary, source notes, and index. . .[and] discusses and provides excellent unbiased descriptions. . .as well as good summaries of major events. . . . Overall, this series would be a worthy purchase to fill gaps and update or expand a print collection in any school or public library.