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ao REPORT . . . . @ ; of the sd | \ oN omit... LABORATORY ..«— FEDERAL BUREAU OF INVESTIGATION WASHINGTON, D. S. 20535. Te! BAC, San Francisco (9-2296). pate: , 1974 ’ ia ( ; a6) . FBI File ch belie ] 77) "** ZODIAC . rh NOOR-14164 IC EXTORTION D-740208094 LL “ Specimens fees 2/8/74. . = : : | : - wise ~ a ~ _ 2 | _ | photograph of envelope poatansrked "U8: ‘POSTAL SERVICE ‘ca G40 Alt 20 JAN” Dearing hand printed address address “San Fran. Cas ’ No determination as to the meaning ot tne marks on the bottom aftr on ges could be made, Although having some characteristics . . Boerne , by Gilbert and Sullivan, It is noted portions of "The Mikado” had oe mented in previous specimens. (Laboratory report eae “CR-13816 « au) | ¢ aS he EASE perenne e Eas wore 3