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American Architects Directories:
Listing in 1962 American Architects Directory under K
Listing in 1970 American Architects Directory under K
Biographical Directories:
Entry under Keck and Keck in Macmillan Encyclopedia of Architects (New York: Macmillan, 1982)
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The American Institute of Architects Archives
Keck and Keck information file in Baldwin Memorial biographical files contains publicity information and July 1965 issue of Inland Architect (AIA Chicago Chapter magazine) with article about firm's work.
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