I swear I could spend hours just looking through random wikipedia articles. I'll start off with this
article on the atomic bombing of Hiroshima and Nagasaki. I did a pretty comprehensive report on the bombings back in 6th grade and remember a lot of it, but I had no idea until looking at that article that we were planning on dropping a third bomb in about another week or so after the first two. Also, if they had not surrendered we were considering dropping three more in September. They were also considering stockpiling the bombs and then dropping a whole bunch in a short time period after the invasion of Japan. I can't even imagine what the fatality count would have been if that had happened.