163 collectibles in The Last of Us Part I.
Medical supplies
The Medical supplies artifact is the suture kit Ellie came to the Colorado mall for in the Left Behind DLC. She takes it inside the crashed military helicopter at the start of The Enemy of My Enemy and packs it for Joel.
Melee: Knots
Melee: Knots is a training manual on a wooden table near the exit of the Hotel Grand in Pittsburgh. It lets a modified melee weapon land one more one-hit kill before the upgrade wears off.
Melee: Techniques
Melee: Techniques is a training manual Ellie fetches from an attic in the Suburbs section of The Suburbs. It gives modified melee weapons one more one-hit kill and stacks with Melee: Knots.
Messenger Particle
Messenger Particle, issue 2 of Savage Starlight, is in an upstairs bathroom of the last house on the street in the Suburbs section of The Suburbs.
Military Pamphlet
The Military Pamphlet is a FEDRA handout on the stages of infection, and it comes free with Joel's backpack, which you lift off a table in the smuggling tunnel early in Beyond the Wall.
Mob Attack Note
The Mob Attack Note is behind a desk in a back room on the second floor of a building in the Financial District, in the area crowded with hunters just after the Final Attack Note.
Molotov: Construction
Molotov: Construction is a training manual on the kitchen counter of the apartment where you meet Henry and Sam in Pittsburgh. It widens a Molotov's fire radius to 1.5 times normal.
Molotov: Deployment
Molotov: Deployment is a training manual behind the shiv door to Room 104 in the science building of The University. It doubles the radius of a thrown Molotov.
Mother's Letter
The Mother's Letter lies on a white armchair behind a door marked with a red X, right beside the blue truck as you enter the area before the hotel in Pittsburgh. The door is locked, so bring a shiv.
Mrozik's Firefly Pendant
Mrozik's Firefly pendant sits on a tumble dryer in a house past the church graveyard, in the Graveyard section of Bill's Town. It belonged to Peter Mrozik.
Natalie Hoo's Firefly Pendant
Natalie Hoo's Firefly pendant lies in a corner behind a city bus on the ramp down to the underground tunnel in Bus Depot. It belonged to Natalie Hoo.
Negentropy
Negentropy, issue 8 of Savage Starlight, lies on a bench in a small rest area along the cliffside walk by Whitefish Lake, in The Hunt section of Lakeside Resort.
Newspaper clipping
The Newspaper clipping is an optional artifact in Room 209 of the university dormitory. After you deal with the bloater and climb the next stairs, enter the first room on the right and look on the mini fridge to the left.
Nicole Hoo's Firefly Pendant
Nicole Hoo's Firefly pendant hangs from a light fixture outside the bus station in the Highway Exit section of Bus Depot. It has to be shot down or hit with a thrown object.
No Pun Intended
No Pun Intended is one of Ellie's joke books, an automatic artifact already in her backpack when you take control of her at the start of Lakeside Resort. You view it from the Artifacts menu.
No Pun Intended: Volume Too
No Pun Intended: Volume Too is Ellie's second Will Livingston pun book. In the main game it is an automatic artifact in her backpack at the start of Lakeside Resort. In Left Behind, Riley gives it to her during the flashback chapter Fun and Games.
Note from Frank
The Note from Frank is on a table in a house you search with Bill during the High School Escape section. It is in the room closest to where Bill finds his partner, Frank.
Note from Frank (Crumpled)
The crumpled Note from Frank only appears if you give Frank's note to Bill in the garage during High School Escape. Bill reads it, crushes it and tosses it on the floor; pick it back up for a separate artifact.
Note from mom
The Note from mom is a letter from Ellie's mother, Anna, and an automatic artifact in Ellie's backpack at the start of Lakeside Resort. You can read both sides of it from the Artifacts menu.
Note to Bob
The Note to Bob is caught in the barbed wire on the ground at the end of Lincoln's main street, past the camper van and the Marquis Music Store, in The Woods section. It gives you the code to a safe.
Note to Brother
Note to Brother is a handwritten letter on a table upstairs in the spore-filled building of Beyond the Wall. After the first infected fight, climb the stairs, turn left before the hole in the wall and open the closed door; the note sits in the next room.
Note to Derek
The Note to Derek is a scrap in a drawer behind the register of the first shop on the left in the subway room full of clickers. It holds the combination for a safe close by.
Note to Rachel
The Note to Rachel lies on a table in the house with the banging door in Bill's Town. After you get the bow and cross the rooftops, enter the room with the infected; the note is under a wall where Rachel's name is painted with an arrow.
Note to Staff
The Note to Staff is in a suitcase on the floor at the corner of a hallway in the Hotel Grand. After climbing the ladder, go right and shimmy across the collapsed stairs to reach it.