To replay a level go to the door and if you beat the game dont worry just resume and go to the door again
Here is a list of all the collectibles:
1/13 - The first clipping is in the Grand Hall, to the left of the book where you can watch all the clippings, impossible to miss.
Motility Vaults (left door)
6/13 – In the Tea Room in the drawer you face when you enter the door. (Stage 1)
7/13 – In the Foreman’s Office, on the desk you face when you enter the door, hidden by some books. (Stage 1)
13/13 – In the Security Room, on your way to the armory, the first crossing to the left leads to the room (Stage 2)
12/13 – In the Vault (Stage 2)
Luminarium (middle door)
5/13 On the lunch table (Stage 1)
4/13 Once you fall down to the basement via the trapdoor, go right in the first intersection, at the end is a chest with the clipping (Stage 1)
10/13 In the Genlemen’s Parlor in the desk on the right from where you enter (Stage 2)
11/13 In the Private Gallery (the one that needs a key to open) on the wall to the left (Stage 2)
Auditory Annex (right door)
2/13 In the Budoire - the room with the telephone - on the left side of the bed (Stage 1)
3/13 in the Library on the table (Stage 1)
8/13 in the Listening Room on the table (Stage 2)
9/13 in the Repository Room on the shelves (Stage 2)