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- Collection: CDSG
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CRC Chairman Crean to Colonel Lockhart, Director of Signals (Army), Wing Commander E.A.D. Hutton, Director of Signals (Air Force) and Mr. E. Drake, Director, Communications Branch National Research Council, Draft Letter to Brigadier R. Gambier-Perry, Director of Communications Branch, UK Foreign Office, 8 July 1949
Library and Archives Canada 08-Jul-49
Director of Communications Branch, UK Foreign Office to CRC Chairman, 4 July 1949
Library and Archives Canada 04-Jul-49
Telegram from CRC Chairman Crean to Director of Communications Branch, UK Foreign Office, 15 June 1949
Library and Archives Canada 15-Jun-49
Minutes of the 40th Meeting of the C.R. Committee, 14 June 1949
Library and Archives Canada 14-Jun-49
GCHQ Director Sir Edward Travis to Communications Research Committee Chairman G.G. Crean, 28 May 1949
Library and Archives Canada 28-May-49
Director, London Sigint Centre to Crean, DEA, 2 September 1947
Library and Archives Canada 02-Sep-47
