Nom : Carte topographique Chicago, North Shore & Milwaukee, altitude, relief.
Lieu : Chicago, North Shore & Milwaukee, Edens Spur, Williamsburg Square, Northbrook, Northfield Township, Cook County, Illinois, 60015-1331, United States (42.14592 -87.80061 42.14759 -87.79952)
Altitude moyenne : 198 m
Altitude minimum : 184 m
Altitude maximum : 211 m