"The Project supports the full and prompt release of historical materials by governments on all sides of the Cold War, and seeks to accelerate the process of integrating new sources, materials and perspectives from the former "Communist bloc" with the historiography of the Cold War which has been written over the past few decades largely by Western scholars reliant on Western archival sources. It also seeks to transcend barriers of language, geography, and regional specialization to create new links among scholars interested in Cold War history."
"The CIA has established this site to provide the public with an overview of access to CIA information, including electronic access to previously released documents. Because of CIA's need to comply with the national security laws of the United States, some documents or parts of documents cannot be released to the public."
Cold War International History Project
Sponsored by the Woodrow Wilson International Center for Scholars, this online archive is extensive and especially notable for including English-translations of documents from Soviet-bloc countries.
The Avalon Project: Documents in Law History and Diplomacy
Transcripts of thousands of documents spanning several centuries, including a collection on the Cold War.
The National Archives and Records Administration supervises the Presidential Libraries, most of which now provide online access to selected documents. For example, see the Eisenhower Library’s online collection on the U-2 Spy Plane Incident.
The National Security Archive
Documents Relating to American Foreign Policy: The Cold War
Hosted by Mt. Holyoke College, this directory is as extensive as Dr. LaFeber’s, but it also suffers from broken links due to intermittent maintenance. Remember to search broken URLs in the WayBack Machine at the Internet Archive.