The Museum of Modern Art Design Encyclopedia is the most comprehensive design reference guide to date. Compiled over the last 15 years by Mel Byars, in consultation with an international team of design experts, The Encyclopedia sets out to provide the factual framework of a discipline whose own historical accounting of itself is still relatively young. (By way of contrast, art history has existed as a scholarly discipline for over two centuries, and has produced a fairly comprehensive record of itself in that time period.) Only once before has a similarly comprehensive overview of the history of design been attempted--in 1994, also by Mel Byars. The Encyclopedia is about design, of course, but these days "design" seems to encompass almost everything, from magazine layouts and sweatshirts to animatronic flower gardens and heart pumps, not to mention the more abstract "information design." Here, however, design is considered only in its concrete application to functional objects, thus...