May 2 1967
Kroeschell Engineering Co.
September 12 1980
B.O.C. Heating & Air Conditioning Co.
December 15 1980
Barber-Colman Company
February 28 1984
Barber-Colman Company
June 15 1955
Howard T. Fisher & John D. Randall Associates, Inc.
December 1 1922
Holabird & Root
June 20 1942
Northwestern Heating & Plumbing Co.
March 25 1958
Holabird & Root
May 24 1971
Kroeschell Engineering Co.
April 21 1971
Kroeschell Engineering Co.
August 31 1971
Kroeschell Engineering Co.
February 7 1972
Kroeschell Engineering Co.
August 31 1971
Kroeschell Engineering Co.