Declassified Documents Reference System is now called U.S. Declassified Documents Online. The resource has a new interface, additional search and annotation features, and additional content that includes selected records up to 2008.
A new feature allows you to graph either the frequency of your search term (the number of documents per year in which it appears) or its popularity (the percent of the total documents each year in which it appears). This of course only reflects the frequency or popularity of the term in the universe of documents that are contained in this database, which is not a comprehensive collection of declassified documents.
The Library has set up a trial for three primary source collections. The descriptions are from their website.
Cold War Intelligence http://primarysources.brillonline.com/browse/cold-war-intelligence
This collection of 2,360 formerly classified U.S. government documents (most of them classified Top Secret or higher) provides readers for the first time with the declassified documentary record about the successes and failures of the U.S. intelligence community in its efforts to spy on the Soviet Union during the Cold War.
U.S. Intelligence on the Middle East http://primarysources.brillonline.com/browse/us-intelligence-on-the-middle-east
Since 1945, the U.S. intelligence community has had to cover a half-dozen major wars and several dozen smaller but equally bloody armed conflicts in the Middle East, as well as innumerable civil wars, border clashes, armed insurgencies, and terrorist attacks. This comprehensive document set sheds light on the U.S. intelligence community’s spying and analytic efforts in the Arab world, including the Middle East, the Near East, and North Africa. It covers the time period from the end of World War II to the present day, up until the 2002-2003 Iraqi Weapons of Mass Destruction (WMD) assessments, the Global War on Terror, the Iraq War, and Iran’s nuclear program.
U.S. Intelligence on Europe http://primarysources.brillonline.com/browse/us-intelligence-on-europeThis collection of over 4,000 formerly classified U.S. government documents provides a comprehensive survey of the U.S. intelligence community’s activities in Europe, including Eastern Europe, Turkey and Cyprus, covering the time period from the end of World War II to the fall of the Iron Curtain and beyond.
I welcome any feedback you want to provide.
The trial expires October 13.