TASK GROUP 7.1 JOINT TASK FORCE SEVEN t, P.O. Box 1663 LOS ALAMOS, NEW MEXICO IN REPLY REFER TO: 20 November 1953 J- 2/6 3/ ° TO: Commander, Joint Task Force SEVEN Washington 25, D. C FRQM: Commender, TG 7.1, Los Alamos, N. M. SUBJECT: Histcory of CASTLE In accordance with Standing Operating Procedure Number 172-701, "Historical Reports", and with your letter 12 October 53, Subject "Preseretion of History of Operation CASTLE", Report RCS: JIF SEVEN-Hl is submitted herewith. This is a brief history of this Group from its inception on 1 February 53 thru 30 September 53. FOR THE COMMANDER: fre (ime pesaty snd DtJr fie fre pecaty for Administration Encl: ce: RCS: JF SEVEN - Hl J-Division J-Sequence J-1, LCol Mcorgan Central Mail & Records