[Code of Federal Regulations] [Title 6, Volume 1] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 6CFR7.29] [Page 40] TITLE 6--HOMELAND SECURITY CHAPTER I--DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY PART 7_CLASSIFIED NATIONAL SECURITY INFORMATION--Table of Contents Subpart B_Classified Information Sec. 7.29 Documents of permanent historical value. 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.