M. C. Escher's legacy a centennial celebration ; collection of articles coming from the M. C. Escher Centennial Conference, Rome 1998

"The CD-ROM is an extension of the book. It contains color versions of many of the art works that are shown in the book in black and white, as well as additional work by the artists. It gives vignettes of the conference ... animations, short videos, and interactive puzzles." -- p. vii.