Frank Gilbreth Papers on Microfilm #5424 mf. Kheel Center for Labor-Management Documentation and Archives, Cornell University Library.
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Frank Gilbreth Papers on Microfilm #5424 mf. Kheel Center for Labor-Management Documentation and Archives, Cornell University Library. https://aspace3-test.library.cornell.edu/repositories/4/resources/10038 Accessed November 27, 2025.