Left 9, Right 15, Left 7 - West Office, First Floor (in the safe you will find a Hip Pouch).
Left 6, Right 2, Left 11 - East Wing, Waiting Room (you will find a Muzzle Brake or Extended Mag).
Left 2, Right 12, Left 8 - Treatment Pool Room (you will find a Shotgun Stock or Hip Pouch).