Photo of the Day

No. 360

The 1876 Philadelphia world’s fair, which celebrated the nation’s 100th birthday, displayed marvels from around the world: a 45-foot-tall steam engine; a monorail; a typewriter; a telephone; and the cables that would be used to build the Brooklyn Bridge.

Fair-goers were introduced to new food products — popcorn, ketchup and root beer.

For 50 cents, they …