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Airtel to San @aacisco Re: SYMBIONESE LIBERATION ARMY (SLA) _ 2 137- -30832 OP San Francisco should immediately advise FBIHQ whether the OPD {s in possession of documentary materials containing evidentiary or intelligence data concerning which FRINQ or your office has not been advised. tae “a lng oe “a . ne eae Ret wh i. "ta the event. the oPD ts in possession of ‘gach | ; to> >. materfals, you should also advise as to steps being taken by oA" your office to obtain ciples of such materials for review, ‘ ">" analyzation and exptoitation in connection with captioned investigations. . $ NOTE: The SLA is a revolutionary organization which has involved itself in criminal activities including the 2/4/74 kidnaping of Patricia Hearst. On 1/10/74 the OPD recovered — voluminous revolutionary documents and other materials from an SLA pad in Concord, California, apparently used up to that time as an SLA headquarters site. Some 80 pounds of this . material was furnished the Bureau and was processed by the | _ Laboratory in January and February, 1974, and that material has been reviewed and is receiving investigative attention. - .We should be aware of any existing material of which we have. not been advised, and appropriate steps should be taken to obtain copies of same in order that it may receive appropriate investigative attention, This has been coordinated with SA M. A, Morrow of the General Investigative Division.