DNSA contains the most comprehensive collection of primary documents available. The database includes more than 875,000 pages and approximately 140,000 of the most important declassified documents regarding critical U.S. policy decisions.

Provides users with access to a comprehensive collection of historic and current congressional information. Includes full text of congressional publications, finding aids, a bill tracking service, public laws and other research materials. The database is an effective source for general research in many academic disciplines, in addition to research related to specific legislative proposals and laws. Researchers can access information about Congress, including member biographical and committee assignment information, voting records, and financial data.

U.S. Declassified Documents Online provides immediate access to a broad range of previously classified federal records spanning the twentieth and twenty first centuries. The collection brings together the most sensitive documents from all the presidential libraries and numerous executive agencies in a single, easily searchable database.