IMPORTENT: Please look at 19 before you destroy all the generators. ThermalGeeK
#01 Holding Cells To the right of the Recorded Log 3 in another "Control" panel.
#02 Cryo Lab In the Southernmost corner in a "Control" panel.
#03 Holding Cells To the right of your holding cell in a room, you will pass under a "Healing Archway"and then it is right to the left as you go through the doorway in another "Control" panel.
#04 Cryo Lab Enter the lab, take a left, activate the "Release Mechanism" and then go down stairs into the room you just opened and it will be on a wall in a "Control" panel behind a Healing Archway.
#05 Engineering Core In the southern part, to the right of the doorway far south.
#06 Engineering Core In the same room as 5, 7 and 8 logs.
#07 Engineering Core In the same room as 5, 6 and 8 logs.
#08 Engineering Core In the same room as 5, 6 and 7 logs.
#09 Experimentation Lab Near the tables with the Abominations being operated on.
#10 Experimentation Lab In the room of the Experimentation Lab with the core and the core coolant switches, look on the right wall of the room for the log.
#11 Cryo Lab In the northernmost part of the lab before you go into Cryo Storage, there is a "Control" panel to the right of a door when you go into the room where you can freeze everybody by pressing a switch.
#12 Holding Cells To the right of the Recorded Log 1 in another "Control" panel. It is to the right of the door.
#13 Research Lab Near Colonel Hartigan's space capsule.
#14 Holding Cells In the same room as 15 and 22 on the wall opposite.
#15 Holding Cells To the left of your holding cell, down the hall in what looks like a control room, then you must activate a thing called "Control"on the wall.
#16 Cryo Storage In the westernmost most part of the Cryo Storage room and in the southern part of the room to the west.
#17 Cryo Lab In the northernmost part of the lab before you go into Cryo Storage, there is a "Control" panel to the left of a door when you go into the room where you can freeze everybody by pressing a switch.
#18 Biological Research As far north as you can go, in what looks to be a small control center.
#19 Waste Disposal (Can only be accessed once so make sure you get it while you are there!) In the room where you get "ambushed" or that's what sally says it is, as soon as you enter the room where the ambush occurs, directly to your right there will be a "Control" panel. This is the large room right before you meet back up with Sally. WARNING: don't miss this one before you get out of the waste disposal site as the teleporter shuts down (360) Note: Teleporter to Waste Disposal site is only open during the quest Among the Stars, during the subquest to destroy the three generators. As such, this is the only time to get the recording, as the porter is closed after destroying said generators.
#20 Experimentation Lab As soon as you go into the lab, take a right and keep heading right until you see the weird experimentation chairs, it is on the wall in front of those chairs.
#21 Research Lab In the center of the middle room by two horses on the tables.
#22 Holding Cells In the same room as the 15th one on a "Control" panel.
#23 Living Quarters When you enter, continue down the hall way. You will enter a large room, continue heading south until you come to a hallway, at this hallway turn right and keep going until you see a room with tables and chairs, it looks like an alien dining room/cafeteria, as soon as you enter this room it will be on your right.
#24 Weapons Lab In the room where all the guns and ammo and grenades/mines are located, in what looks to be a control room.
#25 Cryo Storage As soon as you enter to the left in a "Control" panel
i found the source via fallout.Wikia all credit goes to them and the person that made the youtube video