Tin toys have been made in Japan for more than 100 years, but during World War II their production--and international sales--ended. Almost as soon as the war was over, ingenious manufacturers began to make model Jeeps out of recycled food cans. With the resumption of international trade in 1948, exports of more sophisticated metal toys soared. At the same time, the postwar boom in the United States led to an increasingly automobile-based society--the...