.....Both books are named Organic Chemistry Second Edition, but are two totally different books about the same subject written by two different authors. These books have been used before, with one being a textbook from Marshall University. While the other one came from Stadium Bookstore out of Huntington WV. .....Both books covers have major wear marks around the edges. The covers are scraped up some and have store stickers on them you can remove if you want to. The covers are fairly sturdy, but not 100%. Just look at all the photos for any reference. .....The pages I don't see much yellowing from age. The outside of the pages are slightly worn with some of the pages bent up or slightly torn. There are markings on some of the pages either with pen or pencil and highlighters. Someone used these books for studying with the highlighter markings. Just look at all the photos for any reference. .....If you have any questions, just let me know, and have a great day.