There is plenty of documentation of 100 octane fuel use before and during the Battle of Britain. For starters:
602 Sqdn. Operations Record Book
611 Sqdn. Operations Record Book
151 Sqdn. Operations Record Book
74 Sqdn. Operations Record Book
111 Sqdn. Operations Record Book
David Ross, The Greatest Squadron of Them All, The Definitive History of 603 Squadron, RAauxAF, (Grub Street, London, 2003)
Alec Harvey-Bailey, The Merlin in Perspective, (Rolls-Royce Heritage Trust, Derby, 1983)
Alfred Price, The Spitfire Story, (Arms and Armour Press Ltd., London, 1986)
Leo McKinstry, Hurricane, Victor of the Battle of Britain, (John Murrey Publishers, London, 2010)
Leo McKinstry, Hurricane, Victor of the Battle of Britain, (John Murrey Publishers, London, 2010)
W.G. Dudek and D. R. Winans, excerpt from AIAA Paper No. 69-779, Milestones in Aviation Fuels, (Esso Research and Engineering Company, New York 1969.)
A. R. Ogston, excerpt from History of Aircraft Lubricants (Society of Automotive Enginees, Inc. Warrendale, PA USA), p. 12.
RAF History
602 Sqdn. Spitfire I
609 Sqdn. Spitfire I
610 Sqdn. - Hawkinge, July 1940
