A few months ago, I started the Weekend Walkthrough, which looks at books based on a point in history (either fiction or non-fiction). Everything I've referred to should be included in the links below. If there's something not in the list that you want to know more about, let me know!
The Early Modern period
The situation in 1650
World War I
How it all started
Crime and punishment - desertion, court martials, etc.
Dulce et Decorum Est, by Wilfred Owen
Old English money (shillings, etc.)