num_pages: 256
description: Looks at an era in American cryptography by detailing the top secret activities of a group of code breakers charged with deciphering military and diplomatic communiques from 1917-1929
language: English
title: AMERICAN BLACK CHAMBER
titlecomplete: AMERICAN BLACK CHAMBER
genres: Espionage, History, Nonfiction
ratings_count: 110
publisher: Ballantine Books