Here are entered works on existing books whose pages have been altered by paint, collage, or other media. Works on books that are produced by artists and intended as visual art objects are entered under [Artists' books.] Works on books illustrated with original prints by well known artists and published in limited editions are entered under [Artists' illustrated books.] Works on sculpture that mimics the format or structure of a book are entered under [Book objects.] Works on custom bindings of books, irrespective of contents, are entered under [Fine bindings.]