From the WWCCWIHP:
The Wilson Center's Cold War International History Project (CWIHP) will host a two-day scholarly conference on 20-21 May 2009 to examine the contents of the [Vassiliev] notebooks and their implications for our understanding of Soviet espionage in the United States. Conference participants will include John Haynes, Harvey Klehr, and Alexander Vassiliev, co-authors of Spies: The Rise and Fall of the KGB in America, contributors to a June special edition of the Journal of Cold War Studies, as well as other intelligence history specialists. For more details download the conference agenda.
Though Vassiliev's access was not unfettered, the 1,115 pages of densely handwritten notes that he was able to take shed new and important light on such critical individuals and topics as Alger Hiss, the Rosenberg case, and "Enormous," the massive Soviet effort to gather intelligence on the Anglo-American atomic bomb project.
Alexander Vassiliev has donated his original copies of the handwritten notebooks to the Library of Congress with no restriction on access. They are available to researchers in the Manuscript Division. Electronic copies of the original notebooks, transcribed Russian versions, and translated English versions are available for download free of charge from the CWIHP website.