Title: Department of State, Memorandum, Memorandum for the Record, April 12, 1957, Top Secret, NARA.
Creator: Department of State
Date in Source: April 12, 1957
Subject: Sweden - Swedish intelligence services - John Cabot - Admiral Ericson - Soviet navy - Shadowing - Naval surveillance - Norway - Russian trawler activity - ELINT collection
Format: 1 p.
Note: Top Secret