Du Pont and public relations colleagues, Box: 21. Harold Brayman papers, MSS 0261. University of Delaware Library Special Collections.
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Du Pont and public relations colleagues, Box: 21. Harold Brayman papers, MSS 0261. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/150105 Accessed September 18, 2024.