. "43 letters"@en . . "Correspondence with Westdeutscher Rundfunk"@en . "Correspondence regarding the consignment of certain scripts from WDR programs, and the recording and broadcasting of a talk by Alfred Wiener (1959)."@en . . . . . "Established in Cologne in 1955 the Westdeutscher Rundfunk (WDR) is the largest of the nine regional public-broadcasting services in Germany."@en . . . "WL3000/9/1/1535" . . "This material has been digitised. Readers should book a reading room terminal to access it."@en .