Two slipcases protect six books—three in each. These slipcases are not original to the publisher; they are National Geographic magazine slipcases that the original owner used to protect the six books. You can view photos of the actual books being offered for sale. Some books have yellowing on the dust jackets.

Best Offers: Items are available for offers only after being listed for 30 days. We consider all offers in relation to current market values. We try to respond almost immediately to most offers. Most of our counteroffers are firm but we are open to bargaining.

Contact Us: We are available 7 days a week and are happy to answer any questions you may have.

Returns: We make refunds when you send us the tracking number and we also receive the book we sent you. WE DO NOT make returns if you do not meet those requirements.

This item is shipped with USPS Media Mail. The books we sell are shipped one day after your payment. If your payment is made on Saturday or Sunday, we will ship on Monday. If the parcel office is closed due to weather conditions & On holidays the USPS is closed we ship one day later

We remind you that in the Christmas season all shipments are delayed. FOR AN UNKNOWN "REASON" THE USPS TAKES UP TO A MONTH AND A HALF IN SOME BOOK SHIPMENTS.

In winter, our shipments are delayed due to weather conditions. Roads are frozen or parcel delivery services are closed.

Please ask all questions prior to purchasing. Thanks for looking!