This is the preliminary layout for the file folders that I'm 95% sure are going to be part of the prop package. Combined with the existing Arkham Sanitarium documents they'll kick things up a notch, and it's damnably difficult to produce custom file folders on a DIY basis without access to a specialized large format laser or inkjet printer. Click through for the full-size graphics.
Here's the raw layout:
And a quick and dirty mockup:
They're pretty cool as static props, but they're also useful narrative tools. From an investigative standpoint the file's custody log can serve as a killer clue in live action or tabletop games, bringing to light inconsistencies in testimony from various characters.