[Hydra move]
Emergency planning, EASE, British High , British Embassy Washington, STRAD, Tripartite Alerts, GCHQ, NSA, CIA
Telegram from Major J.W. Sheen, Directorate of Communications, P 2-4 to V.J. Habberfield, Cabinet Office, London, pertaining to Hydra relocation. Sheen informs Habberfield manual switching facilities will be provided at Carp. relocation to take place late 1965, early 1966. Technical/circuit changes will be required. Sheen provides list of UK circuits to be affected by changes and asks for recommendations.
Fixed Communications - Hydra Telegraph Relay System - Relocation of Hydra - Plans and Policy, RG24, S-2723-2, Vol. 1, Library and Archives Canada (LAC)
Text