America owes its fascination with the yo-yo mainly to Chicago businessman Donald F. Duncan Sr., who spotted it while on a business trip to San Francisco in 1928. It was being used by Pedro Flores, a ...

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The Duncan Family Yo-Yo Collection consists of papers, photographs, advertising materials, scrapbooks, clippings and audio-visual materials. These materials trace the rise and fall of the companies ...

The first yo-yo craze began in the United States in 1928. It hit Tucson a few years later and a contest at a drugstore inspired this article. Pretend you have never seen a yo-yo. Would this ...