Manhattan Building – Chicago, designed by William Le Baron Jenney, completed; world's earliest surviving steel-framed building to use a purely skeletal supporting structure.[3]
^Pinkney, David H. (1972) [1958]. Napoleon III and the Rebuilding of Paris (Paperback ed.). Princeton, N.J.: Princeton University Press. ISBN0-691-00768-3.
^Lanctot, Barbara (1988). A Walk Through Graceland Cemetery. Chicago Architectural Foundation. pp. 14–15.