Alex Johnson in The Independent:
A Farewell to Arms by Ernest Hemingway
How I Became a Socialist by Helen Keller
The Iron Heel, The Jacket and Martin Eden by Jack London
Deutsche Ansprache: ein Appell an die Vernunft (An Appeal to Reason) by Thomas Mann
All Quiet on the Western Front by Erich Maria Remarque
The Outline of History by HG Wells
Monographs about Marc Chagall and Paul Klee
All works published before 1933 by Sigmund Freud, Bertolt Brecht, Stefan Zweig, John Dos Passos and thousands of others
No to decadence and moral corruption! Yes to decency and morality in family and state! I consign to the flames the writings of Heinrich Mann, Bertolt Brecht, Ernst Gläser, Erich Kästner
Joseph Goebbel, 10 May 1933, Berlin
It is impossible to put together an exhaustive list of all the books burnt by the Nazis between 1933 (when burnings started in earnest) and 1945, but estimates put it at well over 4,000. Herrmann and a 1935 issue of Die Bucherei, the Nazi journal for lending libraries, featured a list of guidelines for deciding which books and writers were fit for the flames. This included anything written by Jewish authors (irrespective of the subject), all pacifist literature, all Marxist literature and anything by foreigners or German emigrants in a foreign country badmouthing the new Germany. More specifically, anything supporting the Weimar Republic, primitive Darwinism, or encouraging decadent art was also doomed.
More here.