For any of our History/geography/Bible lesson plan guides you need all of the books listed under “Family” and all of the books listed for grades 1-3. The Family books are the spine books, the books that follow the basic timeline through history from point A to point B. The books listed per grade level are age appropriate books that dive deeper into a specific person or event in history. Some of the Family books also dive deeper into a specific person or event in history, but are suitable for all ages.