c1902  (1912)  The free trappers went alone or in pairs . . . cooking meals on chip fires, using slow-burning wormwood bark for matches. . . .
1884  This illimitable hayfield is everywhere pitted with buffalo wallows, seamed by . . . buffalo trails, sprinkled with their chips or droppings and whitened with their bones.
1960  There were no chips or wood around. so we meandered into the schoolhouse.