"During the occupation of France, Picasso's studio was regularly visited by Gestapo officers looking for evidence of his links to the Resistance. One of them admired a reproduction of Guernica. "You did that, didn't you?" he asked. "No," Picasso replied, "you did.""

This telling anecdote from Miranda France's Daily Telegraph review of Guernica: the Biography of a Painting by Gijs van Hensbergen. I remember seeing it years ago, when it was still behind bullet-proof glass.
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