The Long Dark (UP)

There are 6 notes scattered throughout the episode. Every one of these is along the main story or the side quests. I highly recommend the side quests (Tall Tales, the Bunker missions, and the convicts) because they give you some decent loot (good jacket, boots, etc.).

The bunker mission line starts with a backpack next to a body in the Thomson Store.

The notes:

Local #1 is in the Thomson Store tacked to the bulletin board.
Local #2 is in the Community Center on a desk in the room on the right as you walk in.
Local #3 is in the Radio Tower on the 2nd radio table. (This is locked until later in the story.)

Forest Talker #1 is at the Three Strikes Homestead in the back part of one of the broken sheds, next to a lot of items.
Forest Talker #2 is on the second floor of the Homestead Barn (not the one you start near) in the back right corner (next to the red tool box) on the floor.
Forest Talker #3 is in the grate within the bunker near Skeeter's Ridge.