The Dean Gooderham Acheson (1893–1971) papers are a rich source of information on the policies, thoughts, and accomplishments of the secretary of state who guided American foreign policy from 1948-1953. The papers, which span the period 1898-1978, are especially full for the period after Acheson left public office in 1953 until his death in 1971. Acheson considered these papers to be his private papers, as opposed to the papers he created professionally as a lawyer and publicly as a civil servant. In his private life, Acheson was able to offer a candid view of events during the Cold War without having to temper his words due to political considerations.