Wanfried
Población de Alemania
Max Lohse (techn. Zeichner)
German Museum of Technology
Museum of City History Leipzig
German Documentation Center for Art History - Marburg Picture Index
Museum of City History Leipzig
Unbekannt (Fotograf)
Federal Waterways Engineering and Research Institute
Museum of City History Leipzig
Museum of City History Leipzig
German Documentation Center for Art History - Marburg Picture Index
German Documentation Center for Art History - Marburg Picture Index