Abraham Flexner and Richard Courant correspondence, 79f0d063-b3b0-4787-b5ab-6d1cea4c16ef. Shelby White and Leon Levy Archives Center.
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Abraham Flexner and Richard Courant correspondence, 79f0d063-b3b0-4787-b5ab-6d1cea4c16ef. Shelby White and Leon Levy Archives Center. https://archives.ias.edu/repositories/2/digital_objects/265 Accessed November 29, 2023.