"This volume has been published in conjunction with the conference on Venona co-sponsored in Washington by the National Security Agency, the Central Intelligence Agency, and the Center for Democracy in October 1996"--P.  of cover.
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Also available via Internet from the Center for the Study of Intelligence web site. Address as of 3/6/01: http://www.odci.gov/csi/books/venona/venona.htm; current access is available via PURL.