Drawing of a train car with measurements and numbers on a white…

Black and white drawing of a barracuda fish on a white background with…

Black and white drawing of a building with windows and a few people…

Black and white drawing of a woman sitting in a chair surrounded by a…

Black and white drawing of a triangular prism with a curved line drawn…

Black and white drawing of a Chinese man wearing a robe and a hat

Black and white photo of a house with a garden in front of it

Black and white drawing of a castle perched atop a mountain

Black and white drawing of a man with a beard and glasses