Before I post the next lot of photos, I thought I would show the books I am using.
First, this slender volume that I bought at an antiques fair some years ago for £2.50 (2.5 pounds sterling) on the off-chance that I may go to Jersey one day. This is the book I took with me to help me plan our visits and very useful it is. Published in 1975. I think the authors were members of the Channel Islands Occupation Society.
This is my photo of the 155mm cannon used for the cover of the Osprey book.