[Dear Mr. Grubel].

Letter from Anton Lourie to the Leo Baeck Institute with brief biographical notes on Adele von Mises's brother Alfred Landau and sons Ludwig von Mises and Richard von Mises.Alfred Landau (1850-1935), older brother of Adele von Mises, was one of the first linguists to deal with the Yiddish language on a scientific basis.Ludwig von Mises (1881-1973), son of Adele von Mises, was a prominent economist of the Austrian School. He was a full professor at the University of Vienna before his immigration to the United States.Richard von Mises (1883-1953), son of Adele von Mises, was a mathematician. He was a full professor at the University of Berlin and later at Yale. In addition his many publications in the field of mathematics, he published some important books on positivism.Processed for digitizatio