See Helmut Koopmann (ed): Thomas-Mann-Handbuch, Stuttgart 1990 and Hermann Kurzke: Thomas Mann. Das Leben als Kunstwerk, Munich 1999, Frankfurt am Main 2002.

Nobel Prize 1929 “in particular for [...] Buddenbrooks [...] as a classic work of modern times“, by 1930 the number of copies published had crossed the one-million mark.