Old postcard with a black background and a picture of a man on it

Metal manhole cover on a cobblestone street

White background with a red stamp featuring a maze in the middle

Bridge over a river with cars driving on it

Page from a book with a drawing of a bird perched on a branch…

Red Chinese calligraphy logo on a white background

Black and white photo of a man in a tuxedo

Two men in blue uniforms working on a piece of equipment

Open book with a drawing of a fish on it