Chapter 7: A Mystery
This letter can be found directly behind where Anya is sitting at the start of the chapter. Go to the bed and look for it under the pillow.
Just like the previous health when you were in the HQ, if you sleep on the bed to the left of Max’s room, the statue will appear when you wake up.
When you are in the sewers and you jump down the large circular hole and crawl through the tunnel, go up the stairs and on the barrels to the left will be the ashtray.