The Office recorder is an optional audio artifact in the university science building. On the third floor, go through the door on the left, then straight into the storage room on the left and take it from the far table by the window.
A frustrated researcher reports two more guards lost to infected and grumbles that the Fireflies are holding yet another meeting about the lab's safety. All their equipment, data and staff are here, so he intends to keep testing rather than move.
Firefly's recorder
The Firefly's recorder is an automatic artifact in the university science building. Joel picks it up from a dead Firefly in a cutscene, so it cannot be missed, and you can play the whole message later from the Artifacts menu.
Free Radicals
Free Radicals, issue 7 of Savage Starlight, is on the rusty hood of a car up the hill behind you as The University begins.
Fungal X-rays
The Fungal X-rays are an optional artifact in the university science building. After you follow Ellie through the short tunnel, turn left and check the far table next to the window.
Griggs's Firefly Pendant
Griggs's Firefly pendant lies on a table in the last tent of a camp outside the science building, in the Go Big Horns section of The University. It belonged to Erik Griggs.