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RECORDED - FEDERAL BUREAU OF INVESTIGATION 7/8/70 UNITED STATES DEPARTMENT OF JUSTICE Laboratory Work Sheet LAB FILE Re: ZODIAC File# 9..49911 EXTORTION . Lab.# 790706145 Li 00: Sacranento . . CR-13503 JU Examination requested by: San Francisco (9~2296) eres Airtel 6/ $0/70 Examination requested: Docunen Cryptanalysis) Date received: ua 0 Result of Examination: yIY Examination by: fre A ae Colle = WO ag OM Ae e LS Specimens submitted for examination — Eee for examination — “ie a. mae? hy a 5k velo stmarked "SAN FRANCISCO, CALIF. & (ee 26 JUN AM 1970," bearing hand printed KMAESERM address "S8.F. Chronicle San Fran. Calift.," accompanying map and hand EXXZEXRX printed letter beginning “This is the... ." 2 2- Sacramento (9-68) meen a7 srmmrnene eee 9 ro Seamer gn sear sae andy em Senet tn omni URIS BAN ey mn tyne