(Royal Navy - Helicopters). 820 Naval Air Squadron. (L.: Directorate of Public Relations (Royal Navy), 1989). Pp [8]. Illustrated with photos to text;double column. 8vo, stapled illustrated wraps. Contents: The Squadron Toda y; Our Aircraft the Westland Sea King HAS Mark 6; Our Ship HMS Ark Royal; 820 Squadron - A History; 820 Squadron Aircraft; 820 Squadron Ships; Battle Honours. Very good. 10.00