INDEPENDENCE, Mo. - Margaret Truman Daniel, the only child of former President Harry Truman, died Tuesday. She was 83. Daniel died in Chicago following a brief illness, according to a statement from the Harry S. Truman Library and Museum in Independence. She had been living in an assisted living facility for the past several weeks and was on a respirator, the library said. Daniel, a longtime resident of New York City, was also the author of mystery novels, many of them set in Washington D.C.; books on the White House; and biographies, including books on her father and her mother,...