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RR 209. PD PLAIN 3:55'PM URGENT {2-22-71 Lda ‘TO: SAC, SEATTLE (164-81) . ' FROMt SAC, PORTLAND (164-41) (P> IP NORJAK | oS Po PORTLAND INTERNATIONAL == BS AIRPORT, FURNISHED ANONYMOUS LETTER MAILED AT PORTLAND 12/16/71 AND, ADDRESSED TO"SKY MARSHALLS PORTLAND AIRPORT”. LETIER WAS SLIP OF PAPER UPON WHICH FOLLOWING MESSAGE IN LETTERS CLIPPED FROM NEWSPAPER MOUNTED WITH SCOTCH TAPE: "D.B. COOPER CONFIDENTIAL, = BASED UPON ASSUMPTION LETTER SuccEsTS[ ss AS. SUSPECT, PORTLAND CHECKED INDICES, METROPOLITAN AREA CITY AND TELEPHONE DIRECTORIES, RECORDS OF PORTLAND PD AND MULTNOMAH COUNTY SO, ALL WITH NEGATIVE RESULTS, SUGGEST SEATTLE DO SAME INVESTIGATION THAT AREA. XEROX COPIES OF LETTER BEING FORWARDED SEATTLE BY MAIL, END RECD FIVE VAB FBI SEATTLE CLR ‘ 18 7 el ae EC 22)1971 Ful + SEATTLE