1916
Henry Fuermann and Sons
1966
September 25 1925
Kaufmann & Fabry Co.
1924
Tebbs & Knell, Inc.
November 7 1922
Chicago Architectural Photographing Company
1960s
Korling, Torkel
1977 – 1978
Helmick, William K.
1983
September 1922
Holabird & Root
August 5 1941
Holabird & Root