The main purpose of Book 7 is to propose that slaves, ex-slaves and Free Blacks may have celebrated their First Thanksgiving and Christmas Dinners before 1621 in five territories that later became states. The Africans that were recorded living in the areas were either purchased by slave traders, escaped slaves or African explorers. The five areas that later become states were Delaware, New York, Pennsylvania, Rhode Island and Louisiana. Inventions and patents by Africans and African-Americans are included.