Perception
This bobblehead will permanently bump up your Perception stat by 1.
Head to the Museum of Freedom in Concord, just down the southeast road from Sanctuary.
If this is your first time here, the place is full of raiders. You've been warned.
When you reach the top floor, head into the room where the survivors are hiding.
The bobblehead is on the desk to the left, behind the seriously depressed Jun Long, who has obviously given up on both life and personal grooming.