When I was a child, many of the little farms had windmills. Turned by the ceaseless prairie winds of central Illinois, they served to pump cool water into tanks for the farm animals, as in the photo (which is from an ad for wind turbines!) My prairie lady is from a book cover. On a recent visit "back home" most of the barns are gone or in sad disrepair, and the windmills are gone, replaced near the home of my childhood by wind turbines. Time marches on, but in my memory I can still hear the soothing distant creak of the windmill turning gently in the prairie breeze.