Book excerpt: Judith Miller takes on the 20th century with this new, expansive handbook for both beginning and established collectors. Modern design is beautiful, functional, idiosyncratic, increasing in value, and still relatively affordable. Now, Judith Miller introduces a extensive sourcebook, written specifically for the 20th century collector. From the birth of modern design, through modernism, art deco, mid-century modern, and the post-modern and contemporary years, 20th CENTURY takes a close look all the most important design and collectible categories, including ceramics, glass, furniture, lamps and lighting, clocks, silver and metalwares, sculpture, textiles, jewelry, domestic wares and posters. Including 5,000 photographs and in-depth analysis, collectors will get the inside track on which designs are the true classics and how to make the smartest purchases for the future.