Each month, we challenge ourselves to read outside our usual genres. For October, we're wandering through our history section and reading books by women, including Jill LePore's These Truths: A History of the United States, Margaret MacMillan's War: How Conflict Shaped Us, and Lynne Olson's Last Hope Island: Britain, Occupied Europe, and the Brotherhood that Helped Turn the Tide of War. What are you reading this month?