Versions of 32 CFR Part 197 - Historical Research in the Files of the Office of the Secretary of Defense (Osd) on LawServer 2024 32 CFR Part 197 – Historical Research in the Files of the Office of the Secretary of Defense (Osd) 2023 32 CFR PART 197 – HISTORICAL RESEARCH IN THE FILES OF THE OFFICE OF THE SECRETARY OF DEFENSE (OSD) 2022 32 CFR Part 197 – Historical Research in the Files of the Office of the Secretary of Defense (OSD) 2021 32 CFR Part 197 – Historical Research in the Files of the Office of the Secretary of Defense (OSD) 2020 32 CFR Part 197 – Historical Research in the Files of the Office of the Secretary of Defense (Osd)