6 C.F.R. § 7.29 Documents of permanent historical value.
Title 6 - Homeland Security
The original classification authority, to the greatest extent possible, shall declassify classified information contained in records determined to have permanent historical value under 44 U.S.C. 2107 before they are accessioned into the National Archives.
Title 6: Homeland Security
PART 7—CLASSIFIED NATIONAL SECURITY INFORMATION
Subpart B—Classified Information
§ 7.29 Documents of permanent historical value.