First was Odyssey: The Complete Game Master's Guide to Campaign Management, a gift from my spouse. I expect to be running an RPG again soon, and I'm reading a number of such books to refresh my skills. This one wasn't bad at all.
Next was Pirates of Frequency Modulation, an online history piece that goes into the story of pirate radio off Great Britain. It's worth taking a peek at when you're on the Internet.
Then I read Unframed: The Art of Improvisation for Game Masters, clearly another game-related book and again not bad at all for those who plan on running RPGs.
Next was Osprey Fortress #36: US Strategic and Defensive Missile Systems 1950 - 2004. I found this one especially interesting as my high school was only blocks away from the command center of the Los Angeles-area Nike missile site. These weapons were defensive, intended to shoot down bombers heading towards LA with nuclear weapons, and the book went into some detail about them. Fascinating!
Then, Osprey Men-At-Arms #28: The Russian Army of the Napoleonic Wars. This one was not nearly as interesting. As with most of the older Osprey books, the art wasn't as good as it became later, and the prose was fairly turgid.
Next was Osprey New Vanguard #18: M2/M3 Bradley Infantry Fighting Vehicle 1983 – 1995, pretty technical. Not horrible. Not recommended, either.