Thank you for viewing. There is some yellowing on the bottom, but it does not affect readability. Please understand that this is a used item before purchasing. Please check the condition of the book in the photos. We do not have any pets or smokers. *Please refrain from purchasing if you are concerned about scratches, folds, stains, yellowing, or wear, as this is a used item. We strive for prompt and courteous service. Thank you for your consideration.