It names 18 Americans who defected to the Soviet bloc or were convicted of espionage during the 1960s, including two NSA code clerks, a State Department officer in Warsaw, a Navy yeoman, and an Air Force captain.
It served as an internal Cold War-era tracking document cataloguing the scale of American defection and Soviet espionage penetration cases that had become public knowledge, likely for briefing or counterintelligence reference purposes.
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