U.S. Declassified Documents Online (Gale)

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. The search and discovery interface for the collection allows researchers to locate the full text of documents and quickly filter their search results by document type, issue date, source institution, classification level, and date declassified as well as other document characteristics.