28 July 1967: Engineering Difficulties, Washington British Embassy Circuit

Once established at Rockcliffe, it appears that HYDRA service resumed as normal. This telegram from the Commanding Officer at Rockcliffe to the U.K. Foreign Office seems to indicate some routine troubleshooting to deal with issues on the Washington British Embassy Circuit.

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Fixed Communications - Hydra Telegraph Relay System - Relocation of Hydra - Plans and Policy, RG24, S-2723-2, Vol. 2, Library and Archives Canada (LAC)