Black and white drawing of a man sitting in a chair next to a woman…

Black and white drawing of a man and woman sitting on the floor

Paper with a drawing of a snake on it

Drawing of a plant with green leaves and yellow flowers

Black and white drawing of a machine with a chain attached to it

Painting of a tree branch with white flowers and green leaves against…

Black and white drawing of a tooth with a missing tooth

Old map of the city of San Francisco

Chinese painting of a bird perched atop a tree branch surrounded by…