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American Architects Directories:
Biographical listing in 1956 American Architects Directory
Biographical listing in 1962 American Architects Directory
Biographical Directories:
Entry in R. Randall Vosbeck, FAIA, A Legacy of Leadership: Presidents of the AIA, 1857-2007 (Washington, DC: The American Institute of Architects, 2008)
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The American Institute of Architects Archives
Membership file contains membership application, correspondence about dues and about AIA activities, Fellowship nomination, photograph, and obituary. Additional material in the AIA Archives includes an article reprinted in the Octagon in 1933, and his presidential speeches to the 1953 and 1954 AIA Conventions as published in the AIA Journal.
Publications
"Bloomfield's Visionary Architects: Clair W. Ditchy, FAIA," by Julie Fitzpatrick, in Legacy: A Newsletter of the Bloomfield Historical Society (Fall 2011, Vol. 6, iss. 2).