W. E. Burghardt Du Bois: Die Negerfrage in den Vereinigten Staaten. In: Archiv für Sozialwissenschaft und Sozialpolitik, Band 22, 1906, S. 31–79, archive.org. Es trifft nicht zu, dass Weber Du Bois in Atlanta besuchte; sie trafen sich nur kurz 1904 bei einem wissenschaftlichen Kongress, der zum Programm der Louisiana Purchase Exposition, der Weltausstellung in St. Louis, gehörte; vgl. Lawrence Scaff: Weber’s Amerikabild and the African American Experience. In: David McBride, Leroy Hopkins, Carol Blackshire-Belay (Hrsg.): Crosscurrents: African Americans, Africa, and Germany in the Modern World. Camden House, Columbia 1998, S. 82–94, hier S. 86 ff. und 93.
Kommentierter Brief von DuBois vom 7. November 1895 an Senator George Frisbie Hoar. Im Kommentar heißt es: „Du Bois’s application for aid was rejected by the Slater Fund, but Hayes encouraged him to reapply. The following year, after the exchange of numerous letters, his application was accepted. In the spring of 1892 he received $750 from the Slater Fund, $375 as a scholarship and $375 as a loan. He used those funds, and a second award received the following year, to support his studies at the Friedrich-Wilhelm III Universitat.“
smithsonianmag.com
Smithsonian Magazine: How Albert Einstein Used His Fame to Denounce American Racism. Abgerufen am 28. Juli 2024 (englisch): „Einstein used his profile and privilege, volunteering to serve as character witness in a trumped-up trial of W.E.B. Du Bois. His influence had the desired effect: When the judge heard Einstein would be involved, he dismissed the case.“
