![File:Bundesarchiv Bild 183-K0709-0001-018, Berlin, Amtseinführung Ruth Berghaus.jpg - Wikimedia Commons File:Bundesarchiv Bild 183-K0709-0001-018, Berlin, Amtseinführung Ruth Berghaus.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/3/35/Bundesarchiv_Bild_183-K0709-0001-018%2C_Berlin%2C_Amtseinf%C3%BChrung_Ruth_Berghaus.jpg/640px-Bundesarchiv_Bild_183-K0709-0001-018%2C_Berlin%2C_Amtseinf%C3%BChrung_Ruth_Berghaus.jpg)
File:Bundesarchiv Bild 183-K0709-0001-018, Berlin, Amtseinführung Ruth Berghaus.jpg - Wikimedia Commons
![The mountain systems of Europe constructed on the basis of contour lines. From the drawings of Professor Berghaus, Berlin. - Antique Print Map Room The mountain systems of Europe constructed on the basis of contour lines. From the drawings of Professor Berghaus, Berlin. - Antique Print Map Room](https://i0.wp.com/antiqueprintmaproom.com/wp-content/uploads/2020/06/mg_3656_copy.jpg?fit=2953%2C2522&ssl=1)
The mountain systems of Europe constructed on the basis of contour lines. From the drawings of Professor Berghaus, Berlin. - Antique Print Map Room
![Map of Mountain Systems of Europe, constructed on the basis of contour lines from the drawing of Professor Berghaus, Berlin by A.K. Johnston by Berghaus, Dr.H. & Johnston, A.K. Engraved by W. Map of Mountain Systems of Europe, constructed on the basis of contour lines from the drawing of Professor Berghaus, Berlin by A.K. Johnston by Berghaus, Dr.H. & Johnston, A.K. Engraved by W.](https://pictures.abebooks.com/inventory/510761460.jpg)