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designation on HCO Policy Letters and HCO Bulletins indicates dissemination and restriction as follows: to go to Association Secretaries or Organization Secretaries of Central Organizations only, not to staff; also to HCO Area Sec, HCO Cont, HCO WW. (HCO PL 22 May 59)
- modifies HCO PL 22 May 59, HCO Policy Letters which are marked CenOCon may be issued to all staff including HASI Personnel. (HCO PL 25 Jun 59)