As new DLC updates came out, revisiting locations became necessary. Keeping track of new items and locations available in each region, what's finished and what's still missing: this is a big challenge for me. That's why I've put together the simple list below for an organized overview of tasks and items that can be managed through the "General Notes" interface. The list includes important and rare items from the base game and DLC parts 1–6 (Forsaken Airfield, Signal Void, Frontier Comfort, Buried Echoes, Last Horizon, Broken Silence), as well as story-related items and locations based on the information available from the following links (many thanks to the creators):

https://thelongdark.fandom.com/wiki/Tales_from_the_Far_Territory
https://www.youtube.com/@Bashrobe/videos

https://www.youtube.com/watch?v=v_H3dLlQMW0
https://www.youtube.com/watch?v=hXm_9-pw22E
https://www.youtube.com/watch?v=MT7tQx8doq8
https://www.youtube.com/watch?v=qd_NYAUMliA
Updated bunker locations (Prepper Caches):
https://www.youtube.com/playlist?list=PLcbQYTyuKQ1WXAMZP8ToLTPpqak0hc3vm

Information about memento locations can be found at the following link: https://thelongdark.fandom.com/wiki/Mementos

Guide for DLC tales story walkthrough:
https://thelongdark.fandom.com/wiki/Tales

Another post of mine where you can find detailed maps for TFTFT regions:
http://steamproxy.net/sharedfiles/filedetails/?id=2899955301
You can download the printable version from the link below:
http://steamproxy.net/sharedfiles/filedetails/?id=3415805357
17/07/2023 List and links updated.
23/01/2024 List updated with Zone of Contamination region.
05/02/2024 List and links updated with unique cooking recipe and insulated flask information.
12/09/2024 List updated with Sundered Pass region and some minor changes.
15/12/2024 The list has been changed with some items from the Broken Silence update.
27/01/2025 To make it more clear, I rearranged the list and made it in printable form as well.

*** SPOILER ALERT ****


SP (Sundered Pass, DLC)
sw cache – – –
old house key –
foreman’s log – – – –
foreman’s polaroid – – – – –
rüdiger’s diary – – –
rüdiger’s watch –
security chief’s id badge –
tactical gloves –
tactical jacket –
camera –
crashed plane –
polaroid – –


ZOC (Zone of Contamination, DLC)
sw cache – –
foreman’s key –
mine office key –
mine gate key –
lockbox key –
page from a journal –
foreman’s site reports – – – –
security chief’s logs – – – –
security chief’s remains –
faded photograph –
my testament –
bolt cutters –
trader radio –
foreman’s tool belt –
respirator –
gold nugget –
chemical boots –
sport bow –
miner’s flashlight –
woodworking tools –
insulated flask (yellow plaid) –
crashed copter –
polaroid – –


FA (Forsaken Airfield, DLC)
sw radio –
sw transmitter (covers the Far Territory) –
sw bunker omega –
sw cache – – – –
field 31 operation memo –
security chief’s log – – – –
interview transcript – – – –
trader radio –
rifle holster –
sport bow –
recipe (camber flight porridge) –
insulated flask (red plaid) –
crashed copter – –
crashed plane –
polaroid – –


TP (Transfer Pass, DLC)
trader radio –


FRBL (Far Range Branch Line, DLC)
miner’s flashlight –


MT (Mountain Town)
sw transmitter (covers HRV) –
sw cache – –
trader radio –
recipe (lily’s pancakes) –
paradise meadows farm key –
bunker –
insulated flask (red plaid / sunburst / jackrabbit) –
polaroid –
memento cache – –
memento hints –


HRV (Hushed River Valley)
sw bunker gamma –
sw cache – – –
woodwright’s bow –
recipe (stalker’s pie) –
bunker –
crashed plane –
moose hide satchel –
polaroid –
memento cache – –
memento hints –


FM (Forlorn Muskeg)
sw transmitter (covers BI / BR) –
sw cache – – –
bunker –
crashed copter –
polaroid – –
memento cache – –
memento hints –


BI (Bleak Inlet)
sw bunker alpha –
sw cache – –
trader radio –
forester’s revolver –
woodworking tools –
recipe (dockworker’s pie) –
cannery door (aurora) –
bunker –
bear skin bedroll –
insulated flask (yellow plaid) –
polaroid –
memento cache – –
memento hints –


BR (Broken Railroad)
sw cache –
trader radio –
recipe (breyerhouse pie) –
memento cache – –
memento hints –


PV (Pleasant Valley)
sw transmitter (covers ML) –
sw bunker beta –
sw cache – – –
wyatt’s skeleton –
broken hatch wheel –
trader radio –
spelunker’s lantern –
recipe (thomson family stew) –
prepper’s abandoned cache –
bunker –
insulated flask (orange) –
polaroid –
memento cache – –
memento hints –


KP (Keeper’s Pass North & South)
spelunker’s lantern –


ML (Mystery Lake)
sw cache – – –
trader radio –
bunker –
crashed plane –
polaroid – –
memento cache – –
memento hints –


WR (Carter Hydro Dam & Winding River)
vaughn’s rifle –


DP (Desolation Point)
sw transmitter (covers CH) –
sw cache –
recipe (coastal fishcakes) –
insulated flask (purple) –
memento cache –
memento hints – –


CH (Coastal Highway)
sw cache – – –
trader radio –
trade drop box –
barb’s rifle –
abandoned mine elevator (aurora) –
insulated flask (orange / purple) –
crashed plane –
polaroid –
memento cache – –


BRM (Blackrock Mountain)
sw transmitter (covers AC / TWM) –
sw cache – –
trader radio –
warden’s revolver –
prison workshop door (aurora) –
bunker –
elevator crank –
ballistic vest –
insulated flask (red plaid) –
polaroid – –
memento cache – –
memento hints –


AC (Ash Canyon)
sw cache – –
curator’s rifle –
woodworking tools –
recipe (ranger stew) –
bunker –
technical backpack –
crampons –
polaroid – –
memento cache –
memento hints – –


TWM (Timberwolf Mountain)
sw cache – –
spelunker’s lantern –
crampons –
bunker –
expedition parka –
insulated flask (sunburst) –
polaroid – –
memento hints – –


OTHER ITEMS
flight jacket (various locations) –
aviator cap (various locations) –
technical balaclava (sw caches and inside Bunker Omega) –
hunter’s revolver (can be found in bunkers) –
bunker rifle (from trader) –
manufactured arrow (from trader) –
survival knife (from trader) –
insulated flask custom sticker variant (from trader) –
prepper’s pie recipe (can be found in bunkers) –
hidden cache (at least 1–7 spawns in AC, BRM, BI, HRV, SP, depending on difficulty) – – – – – – –


ABBREVIATIONS
recipe = Unique Cooking Recipes (9 can be found + 4 from trader)
sw = Short Wave (introduced in the Signal Void storyline)
bunker = Prepper Caches (6 empty + 3 from Hunter, Survival, Kitchen, Conspiracy variants)


MARKING
Italic text: DLC story-related locations and collectibles
Bold italic text: rare weapon variants, clothes, tools and collectibles found only in DLC