"WL3000/9/1/538" . . . . . "Dr Martin Graetz was a Jewish-German physician and acquaintance of Alfred Wiener. He had emigrated to South America in 1939, settling in Bolivia and later in Argentina."@en . . . . "6 letters"@en . . "Containing handwritten and typewritten letters this private correspondence between Graetz and Wiener centers on mutual birthday wishes and the exchange of rather personal than work related information."@en . "Correspondence with Graetz, Martin"@en . . "This material has been digitised. Readers should book a reading room terminal to access it."@en . .