Hi Peter, Great list, there are a few I have not heard of. I thought you would jump me about the coment about finding a writer. Sometimes a specialized book on a helmets goes into far more detail than a casual collector needs, and it would be nice to have a source that covers a wide range of helmet types, for example, to show the major differances between a M1917 US, a M1917A1 and a post war Dutch helmet ect. ect.
I know, I am asking for too much.
Gus