Official at Children's Museum Is Charged in Child Pornography Case By Mary Beth Sheridan and Jerry Markon Washington Post Staff Writers Wednesday, November 7, 2007; B01 A senior executive at the National Children's Museum was arrested yesterday and charged with distributing child pornography over the Internet, officials said. Robert A. Singer, 49, a married father of two who lives in Falls Church, was suspended from his job as chief operating officer and barred from the museum. "We are horrified by the charges," museum officials said in a written statement. According to a complaint filed in Manhattan federal court, Singer sent...