Microfilm copies of "ULTRA" signals
Scope and Contents
Consisting of intelligence from intercepted enemy communications, forwarded from the Admiralty to Allied Commands, "Cairo Series", June 1942-September 1943.
Generally being decrypts from the Government Code and Cipher School at Bletchley Park, Buckinghamshire, using the Enigma machine. The Enigma signals were given a special security classification, "MSS" (Most Secret Source) or "ULTRA".
- 1942-06 - 1943-09
Conditions Governing Access
The collection is open for consultation by researchers using Churchill Archives Centre, Churchill College, Cambridge.
Conditions Governing Use
Researchers wishing to publish excerpts from the papers must obtain prior permission from the copyright holder(s) and should seek advice from Archives Centre staff.
10 archive box(es) : microform
Language of Materials
Other Finding Aids
A copy of this finding aid is available for consultation at Churchill Archives Centre, Cambridge and the National Register of Archives, London. A typescript box list of the microfilms is available at Churchill Archives Centre.
Immediate Source of Acquisition
The microfilms were presented to Churchill Archives Centre by Mr Ralph Bennett in January 1990
Existence and Location of Originals
Public Record Office, Kew, London, references: DEFE 3/758-764, 766-770, 772- 831 & 871-877
This collection (fonds) level description was prepared by Andrew Riley of Churchill Archives Centre in July 2003.
- 2003-08-01 13:57:58+00:00
- Language of description
- Script of description