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'''David Zimmerman''' or '''David Carpenter''' was an American and mid-level official of the [[Communist Party of the United States of America]] (CPUSA) in [[Maryland]].  Under the the name David Carpenter, Zimmerman was part of the Soviet Military Intelligence ([[GRU]]) network that was supervised by [[Whittaker Chambers]].

'''David Zimmerman''' or '''David Carpenter''' was an American and mid-level official of the [[Communist Party of the United States of America]] (CPUSA) in [[Maryland]].  Under the the name David Carpenter, Zimmerman was part of the Soviet Military Intelligence ([[GRU]]) network that was supervised by [[Whittaker Chambers]].

===Reference===

==References==

* Allen Weinstein, ''Perjury: The Hiss-Chambers Case'', New York: Random House, (1997), pg. 137, 192, 209–210, 214–215, 246, 342, 357, 386.

* Allen Weinstein, ''Perjury: The Hiss-Chambers Case'', New York: Random House, (1997), pg. 137, 192, 209–210, 214–215, 246, 342, 357, 386.

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

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