Main entrance (Quad entrance) to Noyes Lab
From Door 1 (facing the quad): Enter, go all the way back (past room 100), turn left and go to end of hall, turn left again. Go through double doors.
From Door 3: Continue straight ahead past elevators, to end of hallway. Turn left.
From Door 2: Go to door 3 and turn left
Doors 1 and 4: enter through the basement. In the basement, take the NE stairs to first floor.