Louis Henry Sullivan was an American architect, and has been called a "father of skyscrapers" and "father of modernism". He was an influential architect of the Chicago School, a mentor to Frank Lloyd
Sullivan in c. 1895
Prudential Building, also known as the Guaranty Building, Buffalo, New York, 1894
Sullivan in 1919, painting by Frank A. Werner
Ornamentation on the World's Fair Transportation Building, Chicago, 1893–94
Henry Hobson Richardson, FAIA was an American architect, best known for his work in a style derived from Romanesque Revival that became known as Richardsonian Romanesque. Along with Louis Sullivan and
Louis Sullivan
…to Frank Lloyd Wright, and an inspiration to the Chicago group of architects who have come to be known as the Prairie School. Along with Wright and Henry Hobson Richardson, Sullivan is one of "the recognized trinity of American architecture." The phrase "form follows function" is attributed to him; it encapsulated earlier…
Detail from portrait by Hubert von Herkomer, 1886
Trinity Church, Boston (1872), is Richardson's most acclaimed early work
The Thomas Crane Public Library (Quincy, Massachusetts), with Japanese inspired eyelid dormers in the roof on each side of the entrance
The Old Colony station in North Easton, Massachusetts, illustrates Richardson's use of Japanese architectural concepts