This book offers an exciting look at the National Football League, from the dynasties of the past to the superstars of today. Short paragraphs provide easy-to-read text, while vivid photographs make the book engaging and accessible. The book also includes informative sidebars, “Dynasty” special features, a list of league records, a timeline, comprehension questions, a glossary, an index, and a list of resources for further reading. This book is part of the Apex Varsity imprint, which has a reading level of grades 3–4. However, the imprint is specifically designed for older readers, with interest levels of grades 3–9.