Nan Wood Graham, 83, poses next to "American Gothic," painted by her brother Grant Wood, at a preview of an exhibition of Grant's work at Chicago's Art Institute, Ill., on Jan. 18, 1984. Graham sat for the portrait in 1930 with their dentist Dr. B.H. McKeeby. Grant Wood insisted that American Gothic, with its stern farmer and daughter, wasnt a true parody. Rather, he saw the humor in the painting as lifelike. (AP Photo/Mark Elias)