Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwaldeating lunch, still wearing laboratory coats; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Office of Professor Willy Marckwald; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Student with Willy Marckwald at desk in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Portrait of Karl Abenhausen; Employee of Mendelssohn Bank, Berlin Portraits Men

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