“In a nondescript conference room tucked inside the library at the University of Delaware, a graduate student found a historian's equivalent to a needle in a haystack. Amanda Daddona said she discovered a personal letter from Thomas Jefferson amid one of 200 boxes of legal documents, minutes from meetings and day-to-day correspondence of a prominent Delaware family. Jefferson's letter is a tribute to Dickinson, whom he calls 'among the first of the advocates for the rights of his country.'"