Doctor Who: The Edge of Reality

The journal is accessed by pressing the touchpad.

The entries are alphabetized, but only about half of the entries beginning with "The" are in the T section, so those that aren't I've put in brackets to help you search for each entry alphabetically.

1) HYDRORCS - Laundrette - after the scene shifts - on the bench in the middle of the room
2) (THE) SONIC SCREWDRIVER - Laundrette - manager's office - on a box to the right of the safe with the sonic screwdriver in it
3) DALEK INVASION OF EARTH - Reception - on a shelf right of the exit door
4) DALEKS - Alley outside reception - midway down the path leading to the red cables, on a crate
5) (THE) TARDIS - Scrapyard - on a crate in front of the workbench
6) MINISCOPES - TARDIS - on the Miniscope, appropriately enough
7) REALITY VIRUS - TARDIS - on the ground near the Miniscope
8) ZEITON - TARDIS - on the ground near the Miniscope
9) TIME LORDS - TARDIS - on the ground near the Miniscope
10) THE POD - TARDIS - on the ground near the Miniscope
11) THE TAZMAS - Lucia Minor, outside - on the ground at the first campsite, in front of the tent
12) (THE) CYBERREAPER: ORIGINS - Lucia Minor, outside - on a crate at the third campsite
13) THE ENGINEERS' STORY - Lucia Minor, cave - on some rocks just at the bottom of the first set of stairs you descend
14) (THE) LUCIA MINOR - Lucia Minor, inside - sonic your way through the first two doors, and this will be on a crate next to a red-barred door
15) THE ZLYSTERS - Lucia Minor, inside - in the room with the Zlyster pods (they will talk to you), on a chair on the right
16) THE DOCTOR AND EMER - Lucia minor, bridge - on one of the control panels along the left wall, left of a chair
17) EMER: HER STORY - Lucia minor, bridge - on the center console, below a panel with a blue circle on it
18) (THE) CYBERREAPER: THE LEGENDS - Victorian London - at the very beginning of the level, leave the TARDIS and walk forward until you reach a fountain.  This is sitting on the fountain.
19) VICTORIAN LONDON - Victorian London - after leaving the park, directly across from the exit gate is a courtyard with a carriage in it.  The journal entry is on a box just left of the entrance to the alley.
20) (THE) WEEPING ANGELS - Manfred Grayle House (after) - climb two flights of stairs and find this on a couch to the right of an open door.
21) (THE) TIME CABINET OF MAGNUS GREEL - Manfred Grayle House (before) - in the phonograph room, on the windowsill
22) TRIONIC LATTICES - Manfred Grayle House (before) - in the phonograph room, on some cases just right of the fireplace
23) SIR MANFRED GRAYLE - Manfred Grayle House (before) - in the phonograph room, on the middle of the tall shelves on the wall
24) METEBELIS IV - Metebelis IV - at the beginning of the level, cross the bridge into a new room.  This is on a rock on the right side of the new room
25) (DALEK INVASION OF) METEBELIS IV - Metebelis IV - after you sonic a floor square and the scene changes, walk into a new room.  This is on a barrel on the left
26) DALEK TECHNOLOGY - Metebelis IV - on the same low wall as three Dalek eyestalks in the first room of the Dalek Temple.
27) (THE) CYBERREAPER: STATUS - Metebelis IV - after passing through the Dalek Temple, this is on a circular rock before the bridge
28) THE FIRST - Inner Temple of the First - at the very beginning of the stage, just walk forward until you can't anymore and you'll find the page
29) THE MOBILE PHONE - Laundrette, redux - on the table in between the green chairs
30) THIS DOCTOR - Laundrette, redux - manager's office, on the table where the fuse was
31) THAT DOCTOR - Laundrette, redux - manager's office - on a box just right of the safe.  There was a journal entry here the first time you were in the Laundrette.  THIS ONE IS DIFFERENT.  Make sure you pick it up!
32) CYBER INVASION - Scrapyard - while avoiding the Cyberman, run through the junkyard.  When you reach the diagonal red shipping container, turn right and enter a nearby green crate.  This page is at the end of the container
33) CYBERMEN - Scrapyard - near Handles' head, on a box against a low brick wall
34) CYBERMATS - Cybermen Ship - after disabling the three Cybermen, you will go into a new large open room with an elevator in the middle.  In this room, on a box just to the left, is this page.
35) (THE) CYBERREAPER: RAISON D'ETRE - Cybermen Ship - in the conversion chamber, on the left computer bank at the opposite end of the room
36) (THE) DEATH HELIX - Mars, first transmitter area - while following the Doctor, you will reach an area with a series of floating walls with diamond shapes on them. Look for a journal entry on a rock on the right (if you pass the first wall with the diamond shape, you've missed it)
37) REALITY VIRUS TRANSMITTERS - Mars, first transmitter area - while following the Doctor, you will come across a vertical wall with many small diamond shapes in it.  Look for the journal entry on a rock on the left (if you pass this wall, you've missed it)
38) THE LIBERTY ANGEL - Mars, second transmitter area - at the base of the large statue surrounded by a bunch of pillars, right before the stairs you need to climb
39) ALL GOOD THINGS - Mars, third transmitter area - after crossing two sets of floating bridges, you'll be at a fountain.  This is at the base of it.
40) LIFE VEHICLE - Mars, third transmitter area - after crossing three sets of floating bridges, you'll be on an island with two keyhole gates.  Go through them, then turn left and double back towards where you came (staying on the opposite side of the fence).  At the end of the path is a crate with a lantern and this page
41) THE DOCTOR AND REINETTE - Mars, third transmitter area - the area with all of the stairs - on a railing at the intersection at the top where the two stairwells split and reconvene at the final floating bridge

There is also a video provided in Impossible things if you'd rather follow a video guide.