. "Correspondence regarding and critique of a meeting Heilbut have had with Alfred Wiener a decade before."@en . . . . "4 letters"@en . "Correspondence with Heilbut, Jacob"@en . . . . "This material has been digitised. Readers should book a reading room terminal to access it."@en . "Jacob Heilbut was the brother of Jewish-German writer Iwan Heilbut."@en . . . "WL3000/9/1/573" .