Title: Department of State, Memorandum, Circular 175 ::Request for Authority to Negotiate and Conclude a Secret Government-Level Agreement Supplemented If Necessary by a Secret Service-to-Service Agreement for a SOSUS Station in the United Kingdom, February 5, 1971, Secret, NARA.
Creator: Department of State
Date in Source: February 5, 1971
Subject: Great Britain - Royal Navy - Intelligence facilities - Acoustic intelligence - Sound Surveillance System - SOSUS - RAF Brawdy - Submarine surveillance - Hydrophones
Format: 11 p.