I've only read a little of volume 1, and the rest are new. They have been stored at home, so I would like to sell them to someone who understands this. This is a complete set of "World History" consisting of 17 volumes, with an important dates handbook, a must-have set for learning history in depth. - Set Contents: Complete set (17 volumes) - Title: World History - Accessories: Important Dates Handbook Thank you for looking.