As someone who was educated outside of the United States, and as a result had only a vague sort of idea about the workings of the internal conflict in the country circa 1860, I'm completely fascinated by the NYTimes'
Disunion blog. The Times' archives go back that far. Seriously. So every day or so they post a clipping from the archives, giving you a more-or-less day-by-day picture of the developing conflict. They just got started, so there isn't that much to catch up on. It's really interesting to me to analyze similarities and differences in how political discourse got handled then versus now.
History nerds, go check it out.