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John George Duis was a well-known businessman and horticulturist from Meridian Township in Shattuc, Illinois. He operated the Duis Nut Nursery and earned a strong reputation throughout the region for his contributions to nut cultivation. Duis is especially remembered for identifying the native "Duis" pecan tree in the Kaskaskia River Valley in 1933. An active participant in the nut-growing community, he frequently shared his knowledge and research through contributions to the Northern Nut Growers Association.