Black and white silhouette of a train with a plus sign on it

Old book with a black and white photo of a church

Black and white drawing of a city with buildings

Graph on a white background with text at the top and bottom

Diagram of the human heart

Black and white drawing of a human body with a tree in the middle

Page from a Chinese manuscript with Chinese writing on it

Black and white drawing of a group of people gathered around a table

Black and white drawing of a man with a mustache and a top hat