Until the trademark expired in 1965 and competing plastic yo-yos began to outsell his old-fashioned, wooden ones, Duncan was the country’s leading yo-yo producer. This wooden yo-yo was made by the ...

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 ...