Open book with a drawing of a man with a beard wearing a hat

Old map of the Mediterranean Sea

Black and white drawing of a floor plan of a building

Group of men standing next to each other in front of a building

Black and white photo of a lake surrounded by trees

Auditorium with rows of chairs

Old black and white photo of a man and woman standing next to each other

Portrait of Carl Ludwig

Black and white drawing of a man in a top hat and coat