Most stores dealing with instruments have them or can get them if they don't. Online, you have Amazon, eBay and also dedicated string dealers, like: http://www.stringsandbeyond.com/ukelele.... http://www.juststrings.com/ukulele.html.
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.