B17 collision over Hertfordshire "reunion"

Hello everyone, I have been researching the collision in Herts of two B17`s over the village of Weston. This took place at 9.03 Sat 26th August 1944 and resulted in the deaths of 14 aircrew and 2 civilians. Both planes came from the 390th BG based at Framlingham. Over the years I have had relatives contact me for more details as well as visit the crash site. Next week I have Mary flying over from the USA her father was S/Sgt Martin Kilbride who was the waist gunner on one of these collision B17`s named Ding Dong Daddy. I have supplied Mary and her family with 30 years of research, eye-witness accounts, artefacts found at the site and documents. Until 6 months ago Mary and her family only knew that her father had “been killed somewhere in the European theatre of war” Next week Mary is going to stand on the exact spot where her father was killed 67 years ago….the father she never knew and never knew her. Mary has kindly supplied me with over 100 photographs of Martin Kilbride and more notes and details on him than I could ever have thought I would see. 30 years ago at the tender age of 18, could I ever have imagined one day I would meet Martin Kilbride`s daughter? No I think not, a true honour indeed. Over the years I heard about a published Group history book, (most USAAF Groups appear to have had an official or semi official publication at the end of the conflict). The one I am interested in is that of the 390th BG, as rumour has it, that it contains a photo of this incident showing falling wreckage. Once when I came across a copy of this rare book the relevant pages had been ripped away. I was wondering if anyone knows of a copy, that the pictures could be scanned from to me…Im curious to know if this is indeed the Herts collision or a re-run of the famous photo of two B17`s colliding over Thurleigh which seems to crop up everywhere, and of course if it is a different photo I would like to be able to show Mary a true image of the event that took her fathers life……if such exists……Kind regards
Julian Evan-Hart