ACP 121 - Communication Instructions General Message Precedence Categories
subject: ACP 121, communication standards
description: Memorandum from A.M. Mackenzie (RCAP member, MPSC) to Chairman, MPSC, Army member, MPSC pertaining to GCHQ agreement to conform to U.S. message precedence standards.
creator: Department of National Defence
source: Hydra Communications - Policy, RG24, 1250-36 Vol. 2, Library and Archives Canada (LAC)
publisher: Canada Declassified
date: 10/16/1963
rights: Canadian Crown
format: PDF
language: en
type: Text