Title: Royal Air Force, Memorandum, Airborne Sigint Requirements, March 4, 1954, Top Secret, NAUK.
Creator: Royal Air Force
Date in Source: March 4, 1954
Subject: SIGINT - ELINT - London Signals Intelligence Board - LSIB - Aerial reconnaissance - Ferret aircraft - Flight schedule - Aircraft types
Format: 4 p.
Note: Top Secret