All books are purchased used, crystallized in a sodium borate solution, dried through, and sealed with several layers of epoxy to preserve them. These books do not mold or mildew as the sodium acts as a natural preservative. Please take note that they are still considered fragile and for decorative purposes only. Books should be kept indoors in a cool dry place to be enjoyed. These unique one-of-a-kind artworks will become conversation pieces in your home, so I recommend displaying them on a tur