James Callahan

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James Callahan, also James Michael Callaham or Jerome Callahan was a ship’s clerk, described as a “trustworthy dockworker” who reported to the KGB during World War II. Callahan gave Soviet intelligence information regarding the activities of Robert Lambert, head of the California Communist party, and information regarding uranium deposits.

Venona traffic

Callahan is referenced in the Venona #580–581 San Francisco to Moscow, 13 November 1945 decrypt; the NSA has subsequently released a reissue of the first 10 July 1995 release decrypt. Both are listed below.


  • John Earl Haynes and Harvey Klehr, Venona: Decoding Soviet Espionage in America (New Haven: Yale University Press, 1999).