Nancy Drew books are copyrighted, and the copyright has not expired. So, you won't find a site where you can read the books. If you did, it's illegal, and unethical.
Just purchase the books or buy them from used book stores. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.