sentence: All records pertaining to living members are closed to historians.
sentences_before: Only the expurgated records of deceased family members are publicly available to scholars and researchers.
sentences_after: However, as Nelson Rockefeller's researcher, Cary Reich, discovered, in the case of Nelson's voluminous  of papers, only about one-third of these files had been processed and released to researchers up to 1996.
concept_name: record
headings: Rockefeller family The family archives