An indignant letter from a British aristocrat who survived the sinking of the Titanic in 1912 has sold for $11,875, an auction house in New England said Friday. Lady Lucy Duff-Gordon, a target of public outrage after she fled the doomed ocean liner on a near-empty lifeboat, penned the two-page letter in London a month after the disaster. "How kind of you to send me a cable of sympathy from New York on our safety," the fashion designer wrote to a stateside friend.