Although not discovered until after their deaths, the art of Clarence and Grace Woolsey has become recognized as being among the most significant pieces in American folk art in recent years. The legacy that the couple left behind includes more than 200 sculptures created or covered completely in bottle caps. It is said that the couple, farmhands in Lincoln, Iowa, began creating their sculptures one evening when the gallon jar that they had been saving their caps in had become full.
Subsequently, the artists produced a range of astonishing works, including a bicycle, life-sized animals and small-scale buildings from their bottle cap collections. Approximately ten years after they began creating their works of art, the Woolseys began displaying their art as a bottle cap menagerie, calling it “The World’s Largest Pioneer Caparena” and charging visitors a 25 cent admission fee.