This is a good theme: http://www.tumblr.com/theme/11248 As for endless scrolling, you need to add that yourself. No theme has that. Here's some directions to put it in yourself: http://tumblring.net/making-your-tumblr-...
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.