There are/were a series if "At War" books.
They are mainly photo books. All are good. I have the 109 at war. It's not a definitive history, but a good source of photos and some history.
I have:
Mustang at War
Spitfire at War I & II
Mosquito at War
Typhoon and Tempest at War
Thunderbolt at War
You name the WW2 bird and there is probably an "at War" for it.
BTW Pipz, I did come across an actual wartime photo of your squadron's Firefly

