The DK First History Encyclopedia covers everything a child needs to know about the world's most famous historical events! Covering common elementary topics for Grades 1-6, this book provides a strong spine for history reference. This encyclopedia is part of DK's best-selling First Reference series, and introduces exciting areas of history that will get kids hooked on learning about the past, including the Romans, Ancient Egypt, the Vikings, World War I, and World War II. 136 pages, hardcover. Ages 6-9 / Grades 1-4.