Early in this level, you'll find yourself following Beth on a catwalk near the stadium. Turn around to interact with a fuse box that activates the final Quantum Ripple of the game. (If you activated all Quantum Ripples, this should earn you the "Tossing Stones in a Pond" achievement.)
After jumping off the catwalk, Beth will want you to go right to get into the lab. First, turn left and run to the end of the alley, where a chronon source awaits you.
Narrative Object: Countermeasure designs
You'll find these on the table on the right side of Will's lab, near a wall of circuits.
You'll notice that your Time Vision indicator will start flashing while you're near the TV in the lab, leading to a chronon source behind it. To access it, head right from the TV to get behind the wall and collect the upgrade.
Narrative Object: Will's journal
Read this on the large three-monitor computer in the lab.
Narrative Object: Radio broadcast
You'll find the radio on a toolbox on the left side of the lab.
Your quest to unlock a security door will have you following a yellow wire into a wood-paneled building. Before heading inside, climb up the crates next to the building to access the roof and collect a chronon source.
Narrative Object: Will's whiteboard
When you follow the wire into the wood-paneled room, look for the whiteboard on the wall.
Narrative Object: Time machine designs
Once you're inside the room with the safe, look for a bulletin board with your final Narrative Object of the level.