Who were history's most courageous spies? Who had the biggest transformation? In the History's Yearbook series, readers will learn about the amazing and diverse women in history. In Girl Spies, readers will discover and rediscover their favorite heroines and learn about top women spies who have made an impact. Each book in this series is written at a higher maturity level using considerate text at a lower reading level in order to engage struggling readers. Backmatter material includes writing prompts that encourage readers to think creatively and critically. Series includes, a table of contents, educational sidebars, bibliography, glossary, index, and author biography.