Cipher Bureau (Black Chamber)

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:government_agency
gptkbp:alsoKnownAs	gptkb:Black_Chamber
gptkbp:country	gptkb:United_States
gptkbp:dissolved	1929
gptkbp:established	1919
gptkbp:field	cryptography signals intelligence
gptkbp:fundedBy	gptkb:U.S._State_Department gptkb:U.S._War_Department
gptkbp:headquartersLocation	gptkb:New_York_City
https://www.w3.org/2000/01/rdf-schema#label	Cipher Bureau (Black Chamber)
gptkbp:notableAchievement	broke Japanese diplomatic codes
gptkbp:notableDirector	gptkb:Herbert_O._Yardley
gptkbp:notableEmployee	gptkb:Genevieve_Grotjan_Feinstein gptkb:Herbert_O._Yardley
gptkbp:notablePublication	gptkb:The_American_Black_Chamber
gptkbp:operatedBy	gptkb:U.S._Army gptkb:U.S._State_Department
gptkbp:predecessor	MI-8
gptkbp:purpose	crypt codebreaking
gptkbp:successor	gptkb:Signal_Intelligence_Service
gptkbp:bfsParent	gptkb:Signal_Corps'_Code_and_Cipher_Section
gptkbp:bfsLayer	7