Declassification & Transparency
As NSA/CSS reviews records under the Freedom of Information Act or Mandatory Declassification Review provisions of Executive Order 13526, we will make the material available to the public via the NSA.gov website on the Internet. In addition, NSA/CSS periodically conducts "Special Topical Reviews" of categories of records, such as the Gulf of Tonkin, USS Liberty, UKUSA, and posts those records to this site. Lastly, in accordance with the federal Open Government initiative, we will identify subjects and records for which there is a general public interest. We will meet transparency goals by reviewing those records and including them on this web page.
Declassification & Transparency Index
FOIA Reports and Releases
Historical Events, Figures and Documents
NSA Internal Periodicals and Publications
NARA Releases
FOIA Reports and Releases
Annual FOIA Reports
Certain Allegations Regarding E-mail to Agency Officials about NSA Programs
CIA Kryptos Sculpture
Director's Miscellaneous
John Nash Letters (PDF)
Media Leaks
NSA Reports to the President's Intelligence Oversight Board (IOB)
Presidential Transition Documents
Records Management
Unidentified Flying Objects (UFOs)
United States vs. Thomas Drake - (PDF) What a Wonderful Success!
The Voynich Manuscript
Historical Events, Figures and Documents
Arlington Hall
C130 Shootdown
Communication Intelligence Board
Cuban Missile Crisis
Data Encryption Standard
European Axis Signal Intelligence in World War II
Foundations of COMSEC
Gamblers Ruin an Article by Tom Lehrer
Gulf of Tonkin
Herbert O. Yardley Collection
John F. Kennedy Assassination
Korean War
NSA 60th Anniversary
NSA "Appendix A to the Classified Annex to Department of Defense Procedures Under Executive Order 12333, Procedures for Monitoring Radio Communications of Suspected Narcotics Traffickers," December 21, 1984
Oral History Interviews
The Beale Papers
Truman Memorandum, Oct, 24, 1952
UKUSA Signals Intelligence Agreement Documents
U.S.S. Liberty
U.S.S. Pueblo
VENONA
Vietnam Paris Peace Talks
Vietnam POW/MIA Documents
William F. Friedman Collection of Official Papers
NSA Internal Periodicals and Publications
Ask Zelda
Communicators
Cryptologic Histories
Cryptologic Quarterly Articles
Cryptologic Spectrum Articles
Cryptologic Almanac Articles
Cryptologs
History of the Army Security Agency
History Today Articles
History Today Anthologies
Military Cryptanalysis
NSA Early Computer History
NSA Inspector General Reports
NSA Newsletters
NSA Technical Journal Articles
NSA/CSS Policies
Untangling the Web (PDF)
National Archives and Records Administration (NARA) Releases
Under the provisions of Executive Order 13526, (Classified National Security Information), dated 29 December 2009, NSA reviews for declassification all permanently classified documents 25 years or older.
An index of 4,923 entries containing approximately 1.3 million pages of previously declassified documents, which have been released to NARA is provided. The documents are from the pre-World War I period through the end of World War II.
An index of entries containing over 50,000 pages of declassified documents which have been released to NARA in April 2011 is provided. These documents cover a time frame from before World War I though the 1960s.
Visit the NARA website at www.archives.gov.