"Dritter Hof links" appeared again on the list of banned books, together with his subsequent novel "Liebesferne" (1930), when the list was updated and reissued in 1938.During the twelve years the Nazis were in power, Birkenfeld (as he later explained to in 1947) managed to carry on in what was termed inner emigration in a low profile lectureship, also producing several popular biographical novels including one on Johann Gutenberg and another on the emperor Augustus.