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SAC, SEATTLE (164-81) sad NORJAK rs [ on 1/5/72,[ eee Passport Office, Seattle, Washington, advised that the attached control cards are the only records maintained in the Seattle field office that could possibly be identical with suspect and members of his family. said that the information furnished is kept in the Passport agency field offices for the calendar year in which the passport was issued. He said that all other information including the application is forwarded to the Main Office in Washington, D two weeks after the passport is issued. [oat that ‘there is no numerical indices that can be checked to determine if a particular passport number was issued in a field office. [said that any passport number with a “B" prefix, was issued in either 1961 or 1971. He said that the letter prefixes are assigned every 10 years. [_____]|said that the only way to obtain additional background information on possible suspects is through the Main Office of the Passport agency in Washington, D.C., where permanent files are maintained. DST:klb (3) MY, - 3 /- é $ oD JAN SY 1972 FBIL—SEATTLE C A 4 4 b6 b7TC b6 b7TC b6 b7Cc b6 b7C v6 b7C b6 B7C “ DB Cooper-5538