Chairman SB to Service Chiefs of Intelligence and EWT Apr 16 re letter from Col O'Connor...

Chairman SB to Service Chiefs of Intelligence and EWT Apr 16 re letter from Col O'Connor in Washington of Mar 21, Chairman to same addressees Apr 30 quoting letter from Col Telford Taylor on joint UKUSA effort on Sigint histories for WW II; AD 3 to DD 1 Apr 19 with draft of signal to LT Col Gore-Browne from C ordering him to return to London from Continent by Apr 22 and report to C, AD 3 to DD 1 Apr 19 with comments on Gp Capt Winterbotham's memo of Apr 14"The Future of SLUs", AD 3 to be responsible for security and dissemination generally, Gore-Browne to be responsible for security and SLUs world-wide, DD 1 to C with points on Winterbotham's memo of Apr 14; AD 2 to DD 1 Apr 18 re Non-Morse Weekly Coverage and Traffic Summary; AD (WTC) to DD 1 Apr 21 with Williams' present and future set requirements for international diplomatic/commercial cover; DD (Y) to AD (WTC) Apr 23 re ATS establishment for Beaumanor, Forest Moor, Kedleston and Shenley, reply Apr 25, AD (WTC) to DD (Y) Apr 23 re running down of intercept station at Bishops Waltham; AD (WTC)'s covering letter of Apr 23 to Col Godefroy of French Sigint Organisation for Sayer's paper written for the French"Development of a Modern Intercept Service"; agenda for Station Officers' Meeting to be held at Shenley Apr 26, minutes for meeting of 26th dated Apr 29; results of Bombe E processing for Apr for BP Huts 6 and 8 and from Service units at Adstock, Eastcote, Gayhurst and Stanmore Apr 30; Hut 3 handling of certain GP decrypts, sent on by Lt Col Webster to DD (MW) Apr 22; AGR Rees to AGD Apr 30 re traffic from Chinese Naval Attaches in London, Bombay and Melbourne, HNS to AGD, NS returns traffic to Berkeley St and then BP send copy of texts to OP-20-G in Washington; paper by CLS Williams Apr 28 on German FO functioning in N Germany with Stockholm being used as a relay station; liaison between Hut 3 and MW Apr 24 on cribs from Fish into diplomatic one time pads; AS order Apr 20 on run-down of Alpha and Melding Watches, orders by AW Bonsall Apr 29 for reporting of decodes concerned with German capitulation and with activities of prominent German personalities; Col Bicher of ETOUSA at SHAEF to DD 1 Apr 16 re French comms equipments, reply Apr 20, Bicher again to DD 1 Apr 23 giving details of French equipment and cypher systems, Bicher to DD 1 Apr 24 re French Hagelin, to visit BP following week; 21st AG to Wilson of CPB Apr 16, Maj Gen Strong to be notified meeting of 23rd cancelled and re-scheduled for Apr 27 or 28, Apr 19 CPB team to meet with Strong in Paris Apr 28, Apr 20 DD 1 to LT Col Gore-Browne at SHAEF stating CPB team led by Brig JH Tiltman from BP with Cdr G Bull, Lt Cdr R Dudley-Smith and Maj FW Edwards to arrive Paris Apr 26 and stay 26-28 to have discussions with Maj Gen Strong and Cols Scott and Bicher on liaison with French, C to Strong Apr 21 with details of CPB team, minutes of meeting of 28th at SHAEF Main on problems of French signal and cypher security; Strong to C Apr 19 re ban on telephone refs to Ultra, reply Apr 20, further exchanges Apr 20-23, combined signal from SB and US War Dept Apr 24 to all Ultra recipients stating Ultra must never be mentioned on telephone; Lt Col Winterbotham at 1 SIC to AD 2 Apr 19 re printer cover on Continent, will be in UK May 2-9 for WO conference, AD 2 to Winterbotham Apr 21 and 23 re Capt Gordon's printer intercept party, reply Apr 22, AD 2 to 1 SIC Apr 29, AD 2 and Kenworthy to visit Gordon May 4; 1 SWG to BP Apr 17/19 on tactical cover, Winterbotham at 1 SIC to BP Apr 19 re forward Sigint deployments into Germany, 1 SWG Advanced closing down at 0600 Apr 21 for forward deployment of over 200 miles, 1 SIC to BP Apr 26, southern E Party to move forward with infantry protection, to deploy to north of Nurnberg Apr 30, 1 SWG Mobile to close down at present location 1600 Apr 29 and deplpoy forward, 21st AG to AD 3 Apr 29, 15 Div secures Elbe bridgehead; BP to 1 SIC Apr 21 re suggestion by 7 SIC to tie in their DF to W Front DF control following withdrawal of German forces from Italy into Austria, requests 1 SIC's views, reply Apr 23, AD (WTC) to Lt Col Blaire Cunnynghame at 15th AG Apr 23/28, 21st AG agrees to idea; 12th US AG to Chairman TICOM Apr 21; DD 1 to Gp Capt Scott-Farnie Apr 29 re possible future sensational Raster intercepts by WU 365 and Detachment A, reply Apr 30; Col Telford Taylor to US Sigint recipients Apr 30 requesting evaluation of UKUSA Sigint support sent to operational HQs; Newsletter No 4 from DD 1 to EWT in Washington Apr 22, Welchman to visit BSC NY and OP-20 and SSA in Washington, Newsletter No 5 Apr 29, FRUMEL to BP Apr 24 for DD (NS) from CBNIET for EWT and Cdr Loehnis in Washington; DNI to Washington Apr 17 re arrival there of Cdr Hughes, to report to BAD Washington; EWT in Washington to Lt Col Blair-Cunnynghame at 15th AG Apr 24 re questions on captured German Sigint unit, probably in Italy, reply Apr 25; Wind Cdr Garrett to HAS in Washington Apr 17 updating him on developments in AS and at BP; Col Telford Taylor to C Apr 17 re US approach to Sigint histories, Chairman SB to C same subject Apr 27; regular technical exchanges between Alexander in BP NS and Bodsworth, NS's integree in OP-20-G, also occasional exchanges between Bodsworth and Prof Plumb, Hunt and McIntyre at BP; Cdr Chalkley, detached from BP NS to OP-20-G, to BP NS Apr 17 re Japanese Naval working aids; HNS to Col O'Connor in Washington Apr 27 requesting direct comms link to Bodsworth and Chalkley via OP-20-G Sigs Office; BSC NY to BP Apr 19, reply Apr 20: NS sends copies of Chinese Naval Attache traffic to US Navy Dept Apr 19, Bodsworth from Hunt at BP Apr 25 re Chinese Naval Attache traffic, AGD to DD (NS) Apr 25 same subject; 7 SIC East to BP Apr 17 and 22 re sending of Naval traffic to BP; Naval Summaries from DNI for COIS BAD Washington via Hut 3 for Capt Laird Apr 19, 23 and 26; 9th USAF to Dr Pickering at BP Apr 25; regular BP liaison with HMS Anderson Colombo; Guam to all BRUSA stations Apr 22 and 23 re Japanese message

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