U.S. Declassified Documents Online This link opens in a new windowU.S. Declassified Documents Online provides access to previously classified federal records in 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, including: intelligence studies, policy papers, diplomatic correspondence, cabinet meeting minutes, briefing materials, and domestic surveillance and military reports. 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.