This Millennium Boxed Set -- five elegantly printed books that describe their own method of creation -- celebrates Donald E. Knuth"s monumental coupling of programming and typography in the TeX and METAFONT systems that are used worldwide by scientists, mathematicians, and others to produce high-quality, aesthetically pleasing text. Originally published in 1986, each volume has changed so much in subsequent printings that nearly every page has been touched. The improvements reflect new developments in digital printing technology; as well as corrections submitted by thousands of volunteers -- making these volumes the most accurate versions yet published. For readers who own earlier printings of Knuth"s books, or have holes in their collections, the Millennium Boxed Set makes updating easy. For those who own none of the books, the boxed set is a convenient way to get them all at once.