A quick solution if you don't want to refactor your documents out of the db at this point is to use compression on your data.
Storing 20MB files in the database sounds like it could cause some performace issues.
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.