Research history of Johaness Grunau owner of a very valuable Mercedes Benz Automobile purchased in 1930. He lived at Albrechtstr 7, Steglitz-Berlin at the time, his father Adloph Grunau built the large building that is a cultural monument, there is much information online. I hope by finding the ownership history of the building , we can learb the history of Johannes Grunau, he was born in 1903 and married Maria Wessel in 1930. He was an Engineer, hoping to find photos of him and maybe his 1930 Mercedes Benz model SS Cabriolet C. Chassis number 35936. I do not know much else about him.
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