Hi everyone. I am looking for a good read on Gettysburg. I am heading there the weekend of November 15th and would like a good, history overview. I was a history major and love reading history BUT in this case, I am just looking for a shorter overview. It seems like most of what I have seen on Amazon is either a 1,000 page treatise or focused on a very specific part of the action. Any advice would be appreciated, thanks!!