*Report of 11 January 1944, FBI Silvermaster file, serial 3378;
*Report of 11 January 1944, FBI Silvermaster file, serial 3378;
*“Comintern Apparatus Summary Report”;
*“Comintern Apparatus Summary Report”;
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*“The Shameful Years: Thirty Years of Soviet Espionage in the Untied States,” 30 December 1951, U.S. Congress, House of Representatives, Committee on Un-American Activities, 39–40.
+
**[http://www.archive.org/stream/shamefulyearsthi1952unit#page/n3/mode/2up ''The Shameful Years: Thirty Years of Soviet Espionage in the United States,''] U.S. Congress, House of Representatives, Committee on Un-American Activities, 30 December 1951, 39–40.
* John Earl Haynes and Harvey Klehr, ''Venona: Decoding Soviet Espionage in America'', Yale University Press (1999), pgs. 232, 236.
* John Earl Haynes and Harvey Klehr, ''Venona: Decoding Soviet Espionage in America'', Yale University Press (1999), pgs. 232, 236.