DOCUMENT 1 - Fawcett's Legacy (Search for the Hidden City)

This document is in the Abandoned Village northwest of the city. If you've already discovered the Abandoned Village Base Camp, fast travel there. Otherwise find the Abandoned Village Entrance on the map and/or follow the main walkthrough to reach the base camp. From there, head to the west, down two flights of stone steps, and you'll find the document lying on the ground on the left. (Click image for more and larger screenshots.)

DOCUMENT 3 - Rebirth and Resettlement (Founding Paititi)

This document is in one of the caves on the southwest side of the city. The cave has openings at both ends, so you can approach from either direction. If you start at the Village Caves Base Camp, exit the cave, and climb the manmade stone ledges with the irrigation channels on the left, you'll end up at the base of a long staircase leading up to the west. Climb all the way to the top of these stairs and the cave entrance will be directly ahead. Inside the cave, you'll find various collectibles, including some gold, relic #7 , and this document. (Click images for more and larger screenshots.)

DOCUMENT 5 - Unuratu's Coronation (Rebellion of Paititi)

This document is in the same cave as the Village Caves Base Camp, at the south end of the city. (Click image for more and larger screenshots.)

DOCUMENT 7 - Epidemic (Conquerors)

Head down the steps from the Village Caves Base Camp and continue north-northeast to the wooden dock at the riverside. There are several collectibles in this area. If you follow the wooden walkway all the way to the end, you'll find this document sitting under a little shelter. (Click image for more and larger screenshots.)

DOCUMENT 9 - El Dorado (Search for the Hidden City)

This document is on the east side of the river, about halfway between the Fishing District Base Camp and Unuratu's Home (and later Skull Cave). To reach it from the Fishing District camp, swim across the river toward the southeast and climb the stone stairs out of the water. Just beyond the first landing, climb onto the ledge on the left to find the document. To reach it from Unuratu's Home, follow the guide for explorer backpack #2. (Click image for more and larger screenshots.)

DOCUMENT 11 - Journal of T. Serrano 3 (The Missionary)

This document is inside Unuratu's Home. If you missed it, either fast travel to the Unuratu's Home Base Camp or climb the ledges on the northeast side of the lower city to reach the entrance, marked 'Unuratu's Home Entrance' on the map. The document is on a shelf near the campfire. (Click image for more and larger screenshots.)

DOCUMENT 13 - Contract (Day in the Life of a Paititian)

The next 5 documents are found in and around the Temple of the Sun Challenge Tomb on the south side of the city. If you haven't explored this area yet, you can wait until the Freedom Side Mission takes you there or follow the Challenge Tomb walkthrough to find it. This particular document is sitting on the ground near the Temple Path Base Camp. (Click screenshot to enlarge.)

DOCUMENT 15 - Journal of T. Serrano (The Missionary)

From the top of the stairs where you found document #14 (above), climb the wall ahead on the right to reach the ledge above. The next document is on the right, sitting on one of the stone blocks near the wooden diving platform. (Click screenshot to enlarge.)

DOCUMENT 17 - The Paddler Gods (Legends of the Maya)

This document is also in the Temple of the Sun Challenge Tomb, in the hallway on the east side of the main puzzle room. If it's your first time exploring the tomb, follow the tomb walkthrough.

If you've already completed the tomb but missed this document, see the bug note below. Fast travel to the Temple of the Sun Base Camp and swing/rappel down into the hallway to the northwest. Continue to the west and crawl under the door into the mirror room. Use mirror #1 to rotate the beam on the left. Cross over it to the northeast corner. Use mirror #2 to rotate the second beam, enabling you to reach the doorway on the east side of the room. The document is just inside on the left. If this is all you need, there's no need to solve the rest of the puzzle. Just climb the wooden slats at the south end of the hallway and follow the canyon back to civilization. (Click images for more and larger screenshots.)

BUG NOTE: On returning to the mirror room, I found the rotating beams were missing, making it impossible to continue. Killing Lara by jumping into the pool and reloading the game fixed the issue for me, but you may want to change save slots at the base camp before climbing down into the hallway, just in case.

DOCUMENT 19 - Lopez's Arrival (Subjugating Paititi)

This document is also in the Abandoned Village, but you'll need the rope ascender to get it. If you don't yet have that bit of gear, you can buy it from the traveling merchant, Moraekah. Then head for the south side of the Abandoned Village and you'll find a sturdy, wooden door with a rope coil in the middle. Shoot a rope arrow into the coil and hold Interact to use the ascender to pull the door off its hinges. The document is just inside on the right. (Click image for more and larger screenshots.)

DOCUMENT 21 - Troubled Lands (Founding Paititi)

This document is inside the temple on the west side of the city. You first enter this area during 'The Hidden City' chapter, when Etzli shows Lara the way to the Belly of the Serpent. If you missed it, fast travel to the Temple District Base Camp and go through the temple entrance near relic #4. The document is just inside on the left, and there's some gold on the right. (Click image for more and larger screenshots.)

DOCUMENT 23 - The Cult's Control (Subjugating Paititi)

The next two documents are found in Manko's Crypt, near the Fishing District Base Camp at the north end of the river. You explore this area during part 2 of the Hearts and Minds Side Mission, in which Lara must retrieve the Savior's Amulet. If you completed the mission but missed the document, follow the directions for document #8 and/or the mission walkthrough to reach the crypt entrance. Once inside, continue through the trapped tunnels. This document is just beyond the spike pit between two spear traps. (Click image for more and larger screenshots.)

DOCUMENT 25 - Resist! (The Resistance)

This document is inside Skull Cave, which is only accessible after returning to Paititi from the Cenote. Either fast travel to the Skull Cave Base Camp, assuming you've been there before, or look for the Heron-and-Eclipse icon marking the cave entrance on the in-game map south/southeast of Unuratu's Home. The document is on a shelf above and to the west of the campfire. If you haven't yet completed the Freedom Side Mission, the mission giver, Poma, will be standing nearby. He's outlined in green in this screenshot. (Click screenshot to enlarge.)

DOCUMENT 28 - Priests of the Sun (Cult of Kukulkan)

The next three documents, #28 - #33, are inside the Temple of Kukulkan. If you missed them on your way to rescue Unuratu from prison during the 'Rebellion Lives' chapter, fast travel to the Temple of Kukulkan Base Camp and re-enter the temple through the doorway to the west. You'll find this particular document lying on the floor near the west wall. (Click image for more and larger screenshots.)

Note that the Temple of Kukulkan Base Camp does not appear until you've completed this area in story mode and reached the Porvenir Oil Fields. You can also re-enter the temple through the doorway at the top of the stairs north of the Upper City Main Gate Base Camp.

DOCUMENTS 31, 32 & 33 - Conspiracy; No One In, No One Out; and Guidelines (Secrets and Lies)

These three documents are also in the Temple of Kukulkan. Follow the directions for document #28 to get back to the temple. Once inside, head for the northeast corner and you'll find #31 sitting on a small table. #32 is midway along the north corridor, opposite the shallow pit with burning coals. #33 is in the northwest corner. (Click image for more and larger screenshots.)

DOCUMENTS 35 & 36 - Cult of Kukulkan (Cult of Kukulkan Story) and The Cult's Promise (Subjugating Paititi)

These two documents are in the guard room in the gorge east of the city. If you missed them while rescuing Unuratu during the main story, fast travel to the Temple of Kukulkan Base Camp, which appears after you've cleared that area. Cross the rope bridge to the island in the middle of the gorge. Climb the stone steps and cross the second bridge. These documents are in the guard room at the east end of that bridge. (Click image for more and larger screenshots.)

DOCUMENT 38 - Crime and Punishment (Cult of Kukulkan)

This document is also in Qispi's Crypt. Follow the directions for document #37, above. From there, proceed into the next room and ride the dangling wooden platform down to the sarcophagus. Continue through the trapped passageway to the northwest, which leads around to a small room with a lit brazier, mural #20, and this document. Again, see the crypt walkthrough for details and screenshots showing how to exit the crypt once you have what you need. (Click image for more and larger screenshots.)

DOCUMENT 40 - More Questions (Inside Out)

This document is in the Crypt of Ollanta, The Potter. Follow the directions for document #39 and/or the crypt walkthrough to reach the entrance. Inside, just beyond the concealed spike pit, squeeze through a narrow opening and you'll find the document sitting on a mound of earth near a skeleton. (Click image for more and larger screenshots.)

DOCUMENT 42 - Warriors of Kukulkan (Cult of Kukulkan)

This document is in the Path of Battle Challenge Tomb west of the city. If you raided the tomb but missed this document, fast travel to the Ossuary Base Camp. Go through the opening to the southwest into the large cavern with the pool. Move down the slope and stand at the edge, just to the right of the jaguar-head handle. Drop down onto the ledge below to find the document. If that's all you need in this area, climb back up to the base camp and fast travel away. (Click image for more and larger screenshots.)