Each picture is more fascinating than the last.

Can you spot him?

Black-and-white photo of a messy desk covered in papers and journals, with a blackboard behind it with lots of writing, and shelves of journals, notepads, and books on either side

Eiffel Tower partially built

Close-up of Mount Rushmore

A medium-size rock behind bars

Black-and-white photo of Queen Elizabeth as a young woman

A torn, slightly faded, and dirty pair of jeans

The back of the Great Sphinx of Giza

A lifeboat with about 20–25 people wearing life jackets in it

Smiling slightly with a bow tie

With a bow tie but many more lines on his face

Close-up of Ralph Lincoln

Ruth Malcolmson

A very wide Golden Gate Bridge cable and fog in the background with a sign giving stats, including "Length of one cable, 3,650 feet, diameter of one cable: 36 3/8 inches"

Bob Ross with a '50s pompadour

Air Hostess Qualifications: Age, 21 to 26; height, 5'2" to 5'6"; weight, 100 to 130 lbs; education, 1 year of college or a registered nurse; must be single and have good vision

Hong Kong

Kong Kong

A male lion stands on two wooden platforms before two cameramen and their equipment

Closeup of Maud Wagner

Nothing on the walls, in the bookcases, or on the floor

A dollar bill with different images and typefaces used, red ink used for the serial numbers and seal, and no numeral 1s in each corner, although George Washington is still in the center

A palette with swathes of different-colored paint

Black-and-white photo of people sitting in what looks more like a living room, with plush, far-apart seats, and a flight attendant walking down a winding staircase

Robert Wadlow

A woman standing on a small table

A gray brick and stone edifice emerging from the water at the shore

Salvator Mundi painting

Interior of a plane

A man standing next to a giant horse, with his entire body underneath the horse's head

Magic Key book "10 Adventures in Disneyland"

A very old violin close up

Tribute to the Donner Party

"View from the Window at Le Gras" by Nicéphore Niépce

An old photo in a frame

Speyer wine bottle

Mock-up of Mount Rushmore showing Washington, Jefferson, Roosevelt, and Lincoln and their torsos and hands

A man on a ladder maintaining the "David" statue

A young child with lace-up ankle boots, a long button-down top with a ribbon tie, skirt and short pants, and a jacket

Black-and-white photo of an iceberg

A building at the top of a wild hill

A temple at the top of stairs with maintained grass at the base

Ham the chimpanzee

Annette Kellerman wearing a short-sleeved, thigh-length bodysuit and tights

Soldiers around a nuclear bomb

Papier-mâché heads that don't look that realistic

Gay Jewel

A huge cloud appears above a cityscape

A very old wooden door

Charles Ponzi

Deaths and casualties for the week, including 21 infants, 353 from fever, 3,880 from the plague, 174 from consumption, 54 from being aged, 74 from "griping in the guts," and 2 from cancer

Closeup of Margaret Gorman

King Tut's artifacts

a knocker-up banging on a window

The old Cincinnati Public Library

Sculpture of Thomas Wedders

Abraham Lincoln's second inauguration

Closeup of Valentine Tapley

doctors wearing long gowns and head covers with just the eyes cut out

Top of Statue of Liberty

Lincoln Memorial

Lincoln Memorial

Lounge on the Titanic

The Olympic third-class saloon

Young Richard Nixon

Times Building

Times Square

Design for the Michelin man

The Golden Gate Bridge under construction

Galileo Galilei's phases of the moon

A couple sitting and holding awards

A man holding a sleeping woman as her legs dangle on the dance floor

Person wearing a wide-brimmed hat and perched on the side of the mountain and carving the eyes

A letter dated June 16, 1977, "a present from a small distant world, a token of our sounds, our science, our images, our music," it "is likely to survive a billion years into our future," and we "hope to someday join a community of galactic civilizations"

A small child sitting on an alligator on the grass and holding a muzzle attached to its mouth