Black and white photo of a factory with a few buildings

Ivory netsuke of a frog on a grey surface

Tree in the middle of a snowy yard

Diagram of a pendulum with a red line and a white background

Black and white drawing of a cityscape with a number of buildings

Open book with a drawing of a line graph on it

Black and white photo of a man sitting in a chair surrounded by candles

Old house in the middle of a field surrounded by trees

Painting of a group of people sitting under a tree