Is there anyone who has not seen the painting of the sturdy Iowa farmer with his pitchfork and his thin-lipped wife or daughter? Ever since it met the public eye in 1930, the work titled American Gothic has elicited admiration, disgust, reverence and ridicule - and has been reproduced hundreds of thousands of times, in every medium. Painted by a self-proclaimed bohemian who studied in Paris, the image was first seen as a critique of Midwestern Puritanism...