A very interesting combination of formats for a novel, split between personal narratives (and those are split between two settings, the Korean War with a soldier named Rafe, and Klail City, a fictional Texas border town where Rafe is from), combined with another mixture of formal documents and depositions.
I’m not sure how much this would hold up if it weren’t leading to future books (which I already know it is), but as character-building and table-setting it works very well.