Large tree in front of a building with a clock tower

Open book with a drawing of a microscope on it

Black and white photo of a city street with a bridge in the background

Old map of the city of San Francisco

Old black and white photo of a young boy wearing a blazer and bow tie

Close up of a metal object on a white surface

Tuk-tuk driving down a flooded street in the Philippines

Three black and white stamps with the numbers 30

Construction site with cranes in the background