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The American Institute of Architects Archives
Membership file contains membership application, correspondence about Institute activities, Fellowship nomination, photograph, press releases, and obituaries. The letters in support of his Fellowship nomination and pages about the Longfellow Building from a 1940 issue of The Property Owner have been scanned as separate files due to size.
Avery Library, Drawings and Archives Collection, Columbia University
For more information https://library.columbia.edu/locations/avery/da.html
Special Collections Research Center, Syracuse University Library
William Lescaze Papers
For more information, see https://library.syr.edu/scrc/
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