Isaak Hermann Haber was a son of Joseph Haber and Fanni Abraham genannt Thalmann. He married Hildegard Meijer on 5 August 1942 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Isaak Hermann Haber
See for more information his headword on the German Wikipedia.
In 2009 an exhibition on Isaak Hermann Haber is being prepared in Mühlheim.
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