Retails for $165.00!! *Textbooks part 1 & 2 are like new *In Their Words- like new *Quiz & Exam book - like new *Answer Key- like new . The Notgrass Exploring World History Set includes two hardcover textbooks, In Their Words and Quiz Key Student Review, covering world history in an engaging and educational manner. Written by Charlene, John, and Ray Notgrass, this nonfiction series is designed for students grades 9-12, making history come alive through the eyes of those who lived it. Perfect for both secular and Christian homeschooling, the books incorporate Bible study and exploration of world events.