Thank You dear RSwank, just read your post.
My father was at the crash site as a child.
We still have the Bank & Turn indicator.
On the mentioned pages 13 and 14 I cannot find geo references.
There are different Stockum.
The Stockum of the crash site is here:
https://www.google.com/maps/place/We...oASAFQAw%3D%3D
The crew came in from NNW towards Unna to bomb ammunition dump,
estimated crash about 5 miles north to Unna.
bye, thank You,
FrankieS