I had been researching the service history of my great uncle, a Flight Engineer on Lancasters with a 'sister' squadron of Harry Yates' 75 Sqn. Despite gathering a wealth of information from official sources, and survivors from his squadron I had not been able to discover exactly how he had been lost.
I picked up a copy of Harry Yates' book quite by chance and, leafing through it, saw his chapter on his most feared target, an oil refinery at Homberg in Germany. Knowing that this was the target where my great uncle and most of his crew were killed, I read on. The detail of the narrative including dates was excellent and he described in detail the op on which my great uncle died and also, most poignantly, an eye-witness description of the loss of his aircraft. Discovering this information was an immense source of comfort to my great uncle's brothers, now in their 80s.
Thank you, Harry, for making this possible.