Sure Gunslinger, nice share (without an argument lol)
If I get around to it i'll put up data on the Spitfire wing designations, but for the record the book is called 'Spitfire, The History' and it really is definitive - everyone interested in WW2 WF air war should have this book (check the reviews, it's all facts, not bias)
http://www.amazon.co.uk/Spitfire-His.../dp/0946219486
ISBN's
0946219486
978-0946219483