Operations

Cold War Overflights: Military Reconnaissance Missions Over Russia Before The U-2 - R Cargill Hall - Colloquy - Apr 1997

Overflight - Strategic Reconnaissance of the USSR - Donald E Hillman with R Cargill Hall - Air Power History - Spring 1996

The Truth About Overflights - Military Reconnaissance Missions over Russia before the U-2 are one of the Cold War's best-kept secrets - R Cargill Hall - The Quarterly Journal of Military History - Spring 1997

Spitfire In Combat - Alfred Price - Sutton Publishing - 2003 - ISBN: 0750931604

Aeroplane - Nov & Dec 1998 - Spy Spitfires - two articles by Edward Powles