Artists' books are works of art created using some of the materials, structures, and creative formats that are found in books: paper, words, illustrations, bindings to hold the work together, a narrative to explore. Some artists' books look like books, but others may look more like paper sculptures, games, or even pieces of mail. Some artists use already-existing books as raw material, creating a new unique work by altering and transforming an old text. Some artists' books are one-of-a-kind creations, while others are produced in multiple copies -- which allows that work to exist in more than one library or museum so that many audiences can explore it.