These are all the documents that I noted down:
* The Swan
- Book: Beginning, close to pod, on a table
- Book: Room 007, on a table
- Book: Room 016, on bed
- Book: Room 016, on lectern
- Book: Room 019, on box
- Book: Tunnel (Endgame), on a crate
- Printout (3x): Tunnel (Endgame), on a crate
- Newspaper: Tunnel (Endgame), on a crate
* Curievale
- Book: Beginning bunker, on desk
- Clipboard: In Curievale Processing, on workbench
* Juleston
- Clipboard: Bunker, on crate
* St. Andrew
- Clipboard: Beginning, before puzzle, on crate in front of stairs
- Clipboard: Bunker, on crate
Note: When I was looking for the last missing ones, I checked the following guide, have a look at is as it also contains some images of the locations:
https://steamcommunity.com/sharedfiles/filedetails/?id=29789...