Within the research work for Intangible Sound of Contact I´ve visited several Archives and Museums in Brazil and Germany.

At the historical Museum José Ferreira da Silva in Blumenau. I’d like to express my heartfelt thanks to Sueli Petry, Kátia Curti and all staff for their exceptional support.

I want to extend a special thank you to the Blumenau family (Jutta and Hans Joachim Blumenau-Niesel) for the warm welcoming in their place in Bad Harzburg and the visit in Hasselfelde. Foto in the Museum Blumenau in Hasselfelde. ©Blumenau-Niesel

Another thank goes to Klaus Wolf for the talk, the guided visit in the Tarabya German War Cemetery in June 2021, and for the documents from his private archive. Check his website Gallipoli1915 for more information about World War I in Turkey.
Other research sources:
Politisches Archiv des Auswärtigen Amtes (online) – big thank to Gerhard Keiper
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