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Project / Collection Qatar Foundation Partnership Programme Subject Ciphers

1. IOR/L/PS/5/266, ff 505-506

Reference (shelfmark):
IOR/L/PS/5/266, ff 505-506
Title:
Request for a Copy of the Foreign Office Cipher Code
Scope & Content:
Secret Despatch from the Foreign Department, Government of India, to the Secretary of State for India, No. 20 of 1871, dated 11 January 1871. The despatch requests a copy of the Foreign Office Telegraph Code, following ‘great inconvenience’ and delay having been caused in ‘an important matter’...
Collection Area:
India Office Records and Private Papers
Languages:
English
Date Range:
11 Jan 1871
Extent:
1 item (2 folios)

2. IOR/L/PS/12/368

Reference (shelfmark):
IOR/L/PS/12/368
Title:
PZ 2123/40 'Wartime censorship: intercepted letters'
Scope & Content:
This file contains various excerpts from, and full translations of, letters sent during the Second World War and intercepted by the Government of India. The file includes: a letter from a member of staff from LM Ericsson relating to the sale and shipping of fuses to the Royal Ministry of Posts, ...
Collection Area:
India Office Records and Private Papers
Languages:
English
Date Range:
12 Apr 1940-5 May 1941
Extent:
1 file (9 folios)

3. IOR/L/PS/12/515

Reference (shelfmark):
IOR/L/PS/12/515
Title:
Ext 2747/41 'Method to be adopted in Sending telegrams to the Gulf.'
Scope & Content:
The file contains correspondence between the Political Resident in the Persian Gulf and the Secretary of State for India querying, and subsequently confirming, the security of sending cyphered telegrams to the Gulf by wireless.
Collection Area:
India Office Records and Private Papers
Languages:
English
Date Range:
19 May 1941-29 May 1941
Extent:
1 file (2 folios)

4. IOR/R/15/2/423

Reference (shelfmark):
IOR/R/15/2/423
Title:
File 10/5 BAPCO CODES
Scope & Content:
The file contains correspondence and telegrams between the Political Agent in Bahrain, the Political Resident in Bushire and representatives of the Bahrain Petroleum Company Limited on the use of a cypher code for their cable communications with New York and on the agreement of the code. There...
Collection Area:
India Office Records and Private Papers
Languages:
English
Date Range:
4 Apr 1943-18 Feb 1946
Extent:
1 file (54 folios)

5. IOR/R/15/2/450

Reference (shelfmark):
IOR/R/15/2/450
Title:
File 10/23 Code Messages - BAPCO
Scope & Content:
The file contains coded messages sent to and from Bahrain Petroleum Company Limited (BAPCO), forwarded to the Political Agent. For security reasons, the messages were coded and the file also contains their transcriptions, mainly on the subject of oil wells maintenance in Bahrain.
Collection Area:
India Office Records and Private Papers
Languages:
English
Date Range:
24 May 1944-2 Mar 1946
Extent:
1 file (96 folios)

6. IOR/R/15/2/926

Reference (shelfmark):
IOR/R/15/2/926
Title:
‘File 4/2 (1.a/50) M.E.I.C. publicity’
Scope & Content:
The file is about a change in administrative arrangements, following receipt of a general instruction in 1939, to send all future intelligence summaries to the new Middle East Intelligence Centre (M.E.I.C.) at Cairo. The file contains confidential, secret and most secret copy letters and telegr...
Collection Area:
India Office Records and Private Papers
Languages:
English
Date Range:
13 Aug 1939- 26 Jun 1943
Extent:
1 file (25 folios)

7. IOR/R/15/2/955

Reference (shelfmark):
IOR/R/15/2/955
Title:
206 Cypher Codes. Correspondence re.
Scope & Content:
The file comprises copies of telegrams written in cypher, some of which have the decoded words written above in pencil. The cyphers in use in the file are the Government Telegraph Code and the Indian Word Code, and correspondence from the Government of India is also included regarding the update...
Collection Area:
India Office Records and Private Papers
Languages:
English
Date Range:
18 Oct 1918-16 Mar 1926
Extent:
1 file (20 folios)