I actually live in Egmond.
I have a book in which there are a lot of stories and photographs from the towns people in those days.
Not much information about the air raids on Germany, but some interesting things.
About a mile from my house, a hurricane was shot down by a german fighter, probably a 109. German soldiers are standing next to the wreckage and smiling. (the photo i mean)
Also a photo of a he-111 that ditched on our beach. The germans quickly overpainted the swastika's on the tail, to let the people think it wasn't a german plane.

I saw it at once of course. But in those days people didn't have that much information available about foreign planes.
A couple of years ago there was a terrible storm which revealed lots of bunkers on the beach. Part of the "atlantic wall". I mean, these bunkers were huge, guns were removed though.
I never thought there would be any bunkers left on the beach, i thought they removed them in the 50's.
You'll be surprised about what a storm can do.
JG5FaBi.