I can refer all kinds of books to you, but for kids books, I don't know. My personal preference is Shelby Footes Trilogy. It would be good for you to read and explain to your grand children as you go along. I believe it is the most nuetral of all the books written on the War and it's causes,,,You can get the Trilogy in a set at Barnes and Noble for about 30 dollars a book or cheaper for the set.