 The first Mies-designed buildings were completed in the mid-1940s, and construction on what is considered the "Mies Campus" continued until the early 1970s.Engineering and research also saw great growth and expansion from the post-war period until the early 1970s.IIT experienced its greatest period of growth from 1952 to 1973 under President John T. Rettaliata, a fluid dynamicist whose research accomplishments included work on early development of the jet engine and a seat on the National Aeronautics and Space Council.