Image: Naughty Dog / PlayStationOfficial screenshot from Naughty Dog / PlayStation.
Chronicles is the gold trophy for finding every note and artifact in The Last of Us Part I. The chapter lists hold 84 in the main story plus 14 in Left Behind, ranging from letters and maps to keepsakes like Sam's robot and Riley's pendant.
Several artifacts appear only once in a scripted moment. Sam's robot is taken by Ellie in the Pittsburgh toy store while Joel isn't looking and lands in her backpack. The crumpled Note from Frank must be picked up from the garage floor after Bill reads and tosses it in Bill's Town.
An artifact grabbed after the last autosave can vanish if you die or quit. Recheck the journal before leaving a chapter.