I can't think of a good way to describe this, so here are some examples:
- World War Z
- Star Wars: The Rise and Fall of the Galactic Empire
- Many of the old Star Wars legends guides (ie The Essential Guide to Warfare)
- The epigraphs in books like American War or many Warhammer books (Ashes of the Imperium is what comes to mind)
Basically something that someone in that universe would also read
by HunterWorld
2 Comments
The Passage, by Justin Cronin, and its two sequels. Simply amazing world building.
The Silmarillion by JRR Tolkien