Thanks to Sybille Baumbach and Claudia Thorn at Dokusearch in Hamburg, and to Jürgen Sielemann at the Hamburg City Archive; without your assistance I would have lost my way among the many archives held in Hamburg. The documents you helped me to salvage were largely impossible for me to read until they were transcribed by Dr Peter Hohn, Hannelore Faroß, Heinz Demmin and their colleagues at Sütterlinstube in Hamburg. Thanks to Cilly Kugelmann and colleagues at the Jewish Museum in Berlin and Patrick Levy in Jerusalem for invaluable discussions about the material. A big thank you once again to Sybille Baumbach, to Dr Clemens Maier-Wolthausen in Berlin, and to Professor, Doktor, Rabbi Michael Berenbaum, Los Angeles, for reading through the manuscript and for your valuable comments. Thanks to Martin Chalmers in Berlin and Marlaine Delargy in Shropshire, UK, for the excellent translations. Last but not least: Thank you Ylva – for everything!