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Bertrand, Joseph, Paris, To [Arthur Korn], 1898-10-17
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Bjerknes, Carl Anton, Christiana, Norway, To Arthur Korn, Feb - 14 March 1898
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Bjerknes, Carl Anton, Christiana, Norway, To [Arthur Korn], 1899-06-28
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Bjerknes, Carl Anton, Christiana, Norway, To Arthur Korn, 1901-04-19
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Bjerknes, Vilhelm Friman Koren, Stockholm, To Arthur Korn, 1903-10-29
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Bjerknes, Vilhelm Friman Koren, Stockholm, To (Arthur Korn], 1906-03-26
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Cailletet, Louis Paul [Paris] To [Arthur Korn], 1903-05-20
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Carathéodory, Constantin, Munich, To [Arthur Korn], 1934-10-19
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Debye, Peter, Munich, To Arthur Korn, 1921-10-13
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Einstein, Albert, Berlin, To Arthur Korn, 1920-01-28
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Einstein, Albert, Berlin, To Arthur Korn, 1926-06-23
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Hilbert, David, Göttingen, To Arthur Korn, 1923-06-26
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Klein, Felix, Göttingen, To Arthur Korn, 1900-11-26
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Ladenburg, Rudolph Walter, Berlin, To [Arthur Korn], undated
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Lasker, Emanuel, Berlin, To Arthur Korn, 1929-02-20
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Lichtenstein, Leon, Leipzig, To (Arthur Korn), 1929-11-04
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Lorentz, Hendrik Antoon, 1853-1928, Haarlem, To [Arthur Korn], 1913-08-13
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Neumann, Karl Gottfried [Leipzig?], To [Arthur Korn], 1899-12-31
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Picard, Emile, 1856-1941, Paris, To Arthur Korn, 1905-11-04
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Picard, Emile, 1856-1941, Paris, To [Arthur Korn], 1907-11-19
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Picard, Emile, 1856-1941, Paris, To Arthur Korn, 1913-12-06
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Picard, Emile, 1856-1941, Paris, To [Arthur Korn], 1914-04-05
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Planck, Max, 1858-1947 Berlin, To Arthur Korn, 1926-01-13
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Planck, Nax, 1858-1947, Berlin, To Arthur Korn, 1910-10-21
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Poincaré, Henri, to (Arthur Korn), undated
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Roentgen, Wilhelm Konrad, Munich, To [Arthur Korn], 1900-11-19
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Roentgen, Wilhelm Konrad, Munich, To [Arthur Korn], 1903-05-17
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Roentgen, Wilhelm Konrad, Munich, To (Arthur Korn], 1906-12-15
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Schrödinger, Erwin, Zurich, To Arthur Korn, 1926-11-03
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Schrödinger, Erwin, Zurich, To Arthur Korn, 1927-07-16
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Schwarz, Hermann Amandus Berlin, To [Arthur Korn], 1905-12-29
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Sommerfeld, Arnold Johannes Wilhelm, Munich, To [Arthur Korn], 1908-01-09
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Steklov, Vladimir Andreevich, Kharkov To [Arthur Korn], [1900]
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Steklov, Vladimir Andreevich, Kharkov To [Arthur Korn], 1902-06-06
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Steklov, Vladimir Andreevich Kharkov, To [Arthur Korn], 1903-03-23
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Volterra, Vito, Rome, To [Arthur Korn], 1910-01-05
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Watson, George Neville, Birmingham, England, To Arthur Korn, 1932-09-26
t.l.s., 2p. (mathematical formulas are added in the author's hand)
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Zaremba, Stanislaw, Krakow, To [Arthur Korn], 1904-06-21