As per class discussion, you may read:
Freakonomics by Steven Levitt (2 points)
The Wisdom of Crowds by James Surowieki (2 points) I have a few copies in my classroom.
If You Catch an Adjective, Kill It by Ben Yagoda (1 point). Adjective isn't about history, but is fun book about grammar (no! I'm serious!) that will improve your writing.