Directions to Mary Gates 420 (Courtesy of Nathan G. Freier)

1. Enter on the north side of Mary Gates Hall.
2. Take the stairs or the elevator to the fourth floor.
3. The elevator doors face in the direction towards room 420. If you turn so that the elevator doors are on your left, you need to go down the hallway to your right.
4. The hallway will take a sharp turn left. Do not go left. Instead, go through the double doors on your right. Room 420 is on your left.

See the map