Chicago Board of Trade Building, 1930, Holabird & Root 141 W. Jackson Blvd. Photo Credit: Eric Allix Rogers

Chicago Board of Trade Building, 1930, Holabird & Root 141 W. Jackson Blvd. Photo Credit: Eric Allix Rogers

Railway Exchange Building, 1904, D.H. Burnham & Co., 224 S. Michigan Ave. Photo Credit: Eric Allix Rogers
Federal Center, 1974, Ludwig Mies van der Rohe, 230 S Dearborn St, Chicago. Photo Credit: Eric Allix Rogers