In this September 2, 2019 photo, Stan Riebold, right, drives a team of six Percheron mules as his grandson Wyatt Erickson, 5, holds on for the ride, near Colfax, Wash. The mules were pushing a combine header to harvest barley during an annual demonstration by members of the Palouse Empire Threshing Bee Association, a group dedicated to preserving the way land was farmed decades ago. (Photo by Ted S. Warren/AP Photo)
