Louis Henry Sullivan (September 3, 1856 - April 14, 1924), An American Architect. Called the "Father of Skyscrapers."
An influential Architect and critic of the Chicago School. A mentor to Frank Lloyd Wright, and an inspiration to the Chicago group of Architects who have come to be known as the Prairie School.
Sullivan is one of "the recognized trinity of American Architecture". He postumously received the AIA Gold Medal in 1944.
“Form follows function” ~ Louis Sullivan