Bin/bash^M is your clue. For some reason there's a DOS line-end character in what's being downloaded. This is probably an error in the formula, but if you're adventurous, you can brew install dos2unix and then run dos2unix on the folder in question.
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.