The documents being destroyed at the archive are replicas of items preserved at the real location. The document with the red handprint is the Priest Mongaku's forty-five article rules and regulations.
The character Jacob says about a nearly deserted ghost town in the mid-west asking, if Gene Hackman was the sheriff. This is a reference to the movie The Quick and the Dead (1995) in which Gene Hackman's character, Sheriff Herod, was indeed the sheriff of a nearly deserted ghost town.