Rise of the Tomb Raider

Please refer to this guide if you either prefer a written guide as apposed to a visual guide or if you have played through collecting the relics without a guide and are perhaps missing one or two items. You can match this guide exactly to the order displayed in the relic menu.

Croft Manor: Blood Ties Relic locations

The Final Puzzle

Sun Shaped Plaque - Secret Vault, on the wall on the right side of the room
Blank Letter - Inside the Safe
Blank Letter (Revealed) - After getting Blank Letter, use Lighter on Grand Hall fireplace

Safe Combination Clues

Egyptian Crown - Library upstairs, in the crate underneath where you find the Expedition Map 2 of 2,requires Master Key to open (Examine - Zoom on the front to locate the hieroglyph)
Amelia's Necklace - Master Bedroom, in the cabinet to the side of the bed (Examine - Turn around, on the lid)
Hieroglyphics Worksheet - Library, on the desk on the far wall

Lara's Childhood

Expedition Map - 1 of 2 - Upstairs corridor outside the Study and Library, on top of the boxes just as you leave the Study
Expedition Map - 2 of 2 - Library upstairs, near the door
Expedition Map - 2 of 2 (Revealed) - Library, use Lighter on the fireplace
Photo of Lara, Richard and Ana - Study room, on the cabinet on the side of the room (Examine - Zoom in on front)
Old Chessboard - Wine Cellar, on the table near the lockers (Examine - zoom in on top of the board)
Lara's Childhood Drawing - Library, behind the desk, by the window
Note from Winston - Library, on table behind the sofa
Photo of Lara Wearing an Egyptian Crown - Study room, found on the desk (Examine - Spin round to reverse to reveal handwriting)
Trap Mechanism - Basement of Despair, underneath the yellow crate before water damaged tunnel leading to the Library (Examine - Turn it on its side and examine the end)
Mummy Bear - Basement of Despair, at the dead end in the South West corner, or locate coffin on the Expedition Map
Clay Imprint of Lara's Hand - Inside the Safe

Amelia's Belongings

Photo of Amelia Holding Lara - Atelier, to the right when you enter, on the desk next to the giant painting
Picture of Amelia and Lara Painting Together - Atelier, next to the ladder (Examine - Zoom in on the front)
Gallery Pamphlet - Atelier, up the ladder, in the chest on the left (Examine - Turn around to front)
Amelia's Perfume Bottle - Master Bedroom, on the dresser between the two windows
Photo of Amelia on her Wedding Day - Master Bedroom, by the window near the bed (Examine - Reverse and zoom on the back)

Lord and Lady Croft

Croft Decanter - Wine Cellar, on the left after you've moved the two corner wine crates and just before the Basement of Despair
Amelia's Wedding Ring - Master Bedroom, on the bed (Examine - Inside the front)

Immortality Collection

Egyptian Ankh - Corridor outside Study and Library, open cabinet opposite hidden door into Servant's Passages
Ouroborous Amulet - Grand Hall downstairs, in the cabinet by the column in the north west
Jade Dragon Statue - Secret Vault, on the large table in the middle of the room
Ancient Anubis Bust - Basement of Despair, turn left after squeezing through the crates, before you climb the ladder to the Library
Phoenix Figurine - Grand Hall upstairs, in the cabinet on north east

Ancestor's Legacy

Benjamin Croft Statue Bust - Study Room, on the table to the side of the room
Unknown Statue Bust - Grand Hall downstairs, in the south east corner, on a plinth
Bust of Richard Croft - Master Bedroom, on the window sill behind the sofa
Croft Family Crest - Grand Hall upstairs, open the chest with the Master Key in the North West
The Golden Rose - Croft Family Crypt, to the right of the steps when you enter the Crypt

Croft Extended Family

Ana's Cigarette Case - Grand Hall upstairs, next to window in the north west (Examine - Reverse, lower side)

Lord Croft's Belongings

African Mask - Study, inside cabinet not far from the door
Lord Croft's Codex - Secret Vault, on the workspace in the right corner
Lord Croft's Unpublished Manuscript - Inside the Safe (Examine - See the reverse)
Ancient Map of Northern Syria - Study, to the side of the room (Examine - Zoom in on front)
Tibetan Scroll - Secret Vault, on the large table in the middle of the room
Pocket Watch - Master Bedroom, on the cabinet on the wall opposite the bed (Examine - on the inside face)
Truth Behind Myth - Study, open the right cabinet not far from the door
Lord Croft's Diploma - Study, on table to the left of the window by the main desk (Examine - Zoom in on front)
Egyptian Hieroglyphics Book - Library, underneath the Hieroglyphics Worksheet

Gear

Lighter - Library, Underneath the Clues collectible (Examine - Search underneath)
Flashlight - Grand Hall downstairs, near the front door
Master Key - Library, with the Expedition Map 2 of 2 in hand, use the Lighter on the Fireplace, then move the cabinet shown on the map
Crowbar - Secret Vault, in the box on the large table in the centre of the room

The Renovations

Missing Renovation Page - Secret Vault, on the workspace in the far left corner
Photograph of the Library - Library, take the ladder in the left corner up, on the bookcase (Examine - see reverse)
Renovation Plans - Room after climbing from the Basement to the Library, on the table (Examine - The reverse)

Additional Relics

These are available only when the main story of Rise of the Tomb Raider has been completed, and all can be found in the Study Room.

Yamatai Sword - Study room, on the boxes by the door
The Atlas - Study room, on the stool near the door
Roth's Pistols - Study room, on the main desk

Following xTGE's video guide here on TA, and to consider mine as an add-on, I rearranged the collectables a bit in order of appearance on the Croft Manor Map (press ).

This should speed up the search process in case you see "Located in the Croft Manor" when searching for a missing item.

I was personally stuck missing 1 relic and 1 document, which seemed to be located in Amelia's room where the paintings are and I didn't take the ladder up...

RELICS

The Final Puzzle
22:20 - Sun Shaped Plaque
20:00 - Blank Letter
- Blank Letter Revealed -

Safe Combination Clues
14:00 - Egyptian Crown
16:10 - Amelia's Necklace
11:00 - Hieroglyphics Worksheet

Lara's Childhood
02:10 - Expedition Map 1 of 2
- Expedition Map (Revealed) -
12:50 - Expedition Map 2 of 2
01:35 - Photo of Lara, Richard, And Ana
07:00 - Old Chessboard
12:40 - Lara's Childhood Drawing
10:45 - Note From Winston
00:42 - Photo Of Lara Wearing An Egyptian Crown
08:21 - Trap Mechanism
08:00 - Mummy Bear
19:25 - Clay Imprint Of Lara's Hand

Amelia's Belongings
18:23 - Photo Of Amelia Holding Lara
18:37 - Picture Of Amelia And Lara Painting Together
18:48 - Gallery Pamphlet
15:52 - Amelia's Perfume Bottle
16:03 - Photo of Amelia On Her Wedding Day

Lord And Lady Croft
07:47 - Croft Decanter
16:57 - Amelia's Wedding Ring

Immortality Collection
02:25 - Egyptian Ankh
05:30 - Ouroborous Amulet
21:11 - Jade Dragon Statue
08:40 - Ancient Anubis Bust
03:25 - Phoenix Figurine

Ancestor's Legacy
01:45 - Benjamin Croft Statue Bust
04:00 - Unknown Statue Bust
15:42 - Bust of Richard Croft
14:45 - Croft Family Crest
23:52 - The Golden Rose

Croft Extended Family
03:40 - Ana's Cigarette Case

Lord Croft's Belongings
01:55 - African Mask
21:35 - Lord Croft's Codex
19:48 - Lord Croft's Unpublished Manuscript
00:55 - Ancient Map Of Northern Syria
20:46 - Tibetan Scroll
15:30 - Pocket Watch
01:10 - Truth Behind Myth
00:10 - Lord Croft's Diploma
11:13 - Egyptian Hieroglyphics Book

Gear
12:24 - Old Lighter
04:43 - Flashlight
13:14 - Master Key
21:45 - Crowbar

The Renovations
20:36 - Missing Renovation Page
11:24 - Photograph Of The Library
09:15 - Renovation Plans

Lara's Adventures
24:52 - The Atlas
25:04 - Roth's Pistols
24:38 - Yamatai Sword

As for the video guide, see xTGE's solution guide here on TA.
In case needed, here's the direct link to xTGE's YouTube video :
Any suggestions to improve this guide are welcome.

Thanks for voting thumbs up if this was somewhat helpful.

Good luck!!