Title: Memorandum, Frost to Chief of Naval Intelligence, Foreign Intelligence Activities, June 20, 1947, Top Secret.
Creator: Memorandum Frost
Date in Source: June 20, 1947
Subject: counterintelligence - espionage - USSR Sweden "Baltic Sea" "electronics intelligence" "ferret" - Top Secret
Format: 5 p.
Note: RG-38, Entry 98C, Box 15, File: TSC #3801-3900, NA, CP.