This multi-volume edition collects and comments on the letters that Bertolt Brecht received during his period of exile. It documents the intellectual life of the 1930s and 40s in Europe and the US while also illuminating the personal situation of many intellectuals and artists, including Walter Benjamin, Arnold Zweig, Lion Feuchtwanger, Ernst Bloch, George Grosz, as well as Heinrich and Thomas Mann. Indices facilitate access to the letters.