It's the sheets of paper that the traitor tester prints out (in the cell block). They can be used in the control room to tell you if the person in the booth was innocent or a traitor, or can be taken to the warden's office to progress the innocent objectives. When you get three, a truck is supposed to arrive after about a minute, but I have never fully tested it so there is a chance that the win trigger will not work

Thanks so much, I love the map, it seems like you put a lot of time and effort into it.