Black and white photo of a sailboat sailing in the ocean

Open book with a drawing of a plant on it

Old map of the city of Pittsburgh and Chicago on a wall

Black and white drawing of a city street with people walking down it

View of a mountain range from the top of a hill

Small white object sitting on top of a black board with numbers…

Bumblebee on a white surface with a piece of paper next to it

Small yellow flower in the grass with green leaves and stems

Close up of a leaf on a tree branch with a blurred background