. . "Correspondence regarding the retrieval of a magazine issue containing an article by Koestler, the consignment of a third person’s letter, and the Library membership of Koestler."@en . . . . "WL3000/9/1/790" . "This material has been digitised. Readers should book a reading room terminal to access it."@en . "Arthur Koestler (1905-1983) was a British author of Austrian-Hungarian descent."@en . . . "9 letters"@en . . . . "Correspondence with Koestler, Arthur"@en .