Collection search - Signalling service - Procedure to be adopted by telephone operators
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Record information – Brief 
Signalling service - Procedure to be adopted by telephone operators
Hierarchical level:FileDate:1915/10/05-1915/12/20Reference:RG 9 III-C-4, Volume number: 4297, File number: Folder 12, file 13, File part: 12.13File no. (creator):Folder 12, file 13Type of material:Textual materialFound in:Archives / Collections and FondsItem ID number:4294973Context of this record: -
Record information – Details Date(s):1915/10/05-1915/12/20Place of creation:No place, unknown, or undeterminedLanguage of material:EnglishFinding aid no.:Source:GovernmentFormer archival reference no.: -
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