I received these books when the chiropractor I used to work for in the early 90s was throwing them out. I've held onto them for approximately 30 years, and I don't know why. I'm ready to move them to someone who can use them. The inside pages look unread, but the covers have different levels of minor discoloration or other wear from storage. These are very heavy. They will be shipped media mail. If you need to expedite that, let me know prior to purchase, and we can look at costs by Ground Advantage or Priority/ Flat Rate. Thank you for looking.