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KECTANDUM FOR:SECURETY FZICZR,TSS SUBJECT: Proposed Contact vith Dr. Harris Isbell

This is to certify that neither the vriter nor any other CD/Tsa personcel vill mke any rev disclosure of claasified inforntion, otber than vas previously disclósed under the secret Liciscn ciearance, to Dr. Isbell durinz the proposed ccatact on July 8 nor on any future contscts vithout specific perission to do so fre the Security. Office.

Chief Chenical Division, TSS

Distribution: Adiressee - Orig. & 1 CD-2-

sg/111

7  1953

Ceclassified by 187475 dals 4FEB.1977