#1 Harriet Tubman, 1868-1869

Tubman is best remembered for escaping bondage in the South and transforming into a fearless conductor for the Underground Railroad, using that secret network of safe houses to guide dozens of enslaved people to freedom in the North.
#2 Marie Curie, Between 1890 And 1934

Not content with just one win, she returned in 1911 to claim the Chemistry prize all by herself, cementing her legacy as the only woman to ever dominate two separate scientific fields on that stage.
#3 Ada Lovelace, 1843

While Babbage was designing the hardware for his "Analytical Engine," Lovelace was busy figuring out the software, writing an algorithm that earned her the title of history's first coder. These scarce images were spotlighted by the Bodleian Libraries to mark her bicentennial, preserving the likeness of a Victorian mind that was centuries ahead of its time.
Photographs are, indeed, powerful media. By transporting us back to a moment in time, we can revisit the memories and feelings associated with it.
And nowadays, you can capture every second within one click of a button, a far cry from the photography technology of the time when these photos were taken.
#4 Caesar, 1851

#5 Nikola Tesla, 1890

The image itself represents a massive trend in late 19th-century photography; becoming popular after 1870, these cards featured a thin print mounted on a 108 by 165 mm board, which served as the standard format for collecting and displaying portraits for decades.
#6 Robert Cornelius, 1839

Working outdoors to ensure he had enough light, he used a makeshift camera equipped with an opera glass lens to capture his own likeness. The resulting image is widely recognized as history's first "selfie," proving that human portraiture was possible even when most people thought the required exposure times made it impractical.
Smartphones have made it easy for us to create visual memories we can look back on in the decades to come. To put that into perspective, research has shown that 5.3 billion photos are captured worldwide each day. That means people take 61,400 photographs per second.
#7 Princess Mary, 1856

#8 Florence Nightingale, 1856-1857

Her family actually considered this specific portrait to be the most accurate likeness of her, and because it was shared so widely, it became the image most people associate with the legendary reformer.
#9 Victor Hugo, 1876

It’s a fittingly high-quality format for Hugo, considering his status as the heavyweight champion of French Romanticism. While international readers usually know him best for writing Les Misérables and The Hunchback of Notre-Dame, folks back in France actually revere him even more for his poetry than his novels.
As psychologist Dr. Fabian Hutmacher tells National Geographic, digital photographs have reshaped how we make memories, noting that people today can record much more data about their lives than those in previous generations who lived before smartphones.
“Memories are crucial for defining who we are,” he said. “They are a sort of reservoir that we refer to whenever we think about our lives.”
#10 Mary Church Terrell, 1880

She didn't just witness history, though; she shaped it, evolving her activism from the self-improvement strategies of Booker T. Washington into bold, direct action like organizing sit-ins and boycotts to challenge segregation.
#11 Charles Darwin, 1868

Despite the initial shock to religious sensibilities, his evolutionary theories eventually became the bedrock of modern biology. Cameron recognized the magnitude of her subject (she also shot heavy hitters like Tennyson) and later had this image produced as a stable carbon print to keep up with the demand for the famous naturalist's likeness.
#12 Isambard Kingdom Brunel, 1857

This specific moment captures him near the launch of his groundbreaking transatlantic steamer and was snapped by Robert Howlett. Howlett, a partner at a top London studio called the Photographic Institution, had been sent by the Illustrated London Times specifically to document the construction of Brunel's massive vessel.
The idea of taking a photograph is to preserve a memory. However, taking too much may actually defeat the purpose. A 2013 study found that point-and-shoot memories may impair memory.
According to Dr. Linda Henkel, the study's author, people tend to use cameras as a crutch, relying on them to store memories.
#13 Jacques Offenbach, 1870

His style was the perfect mix of elegance and biting satire, defining the artistic mood of the era. Despite how specific his musical comedies were to his own time, his wit and fluent melodies were strong enough to keep his work in the global repertoire well into the 21st century.
#14 Mark Twain, 1907

The image captures the "irascible moralist" in his later years, looking every bit the literary giant who rose from humble beginnings to become one of the most beloved and sharp-witted public figures of his time.
#15 Arthur Wellesley, 1844

He didn't just stick to the battlefield, though. He also translated that leadership into politics, serving two separate terms as the Prime Minister of Great Britain.
For example, Dr. Henkel noted that people would attend a concert and spend 90 minutes of it searching for the optimal angle to photograph. She notes that this focus on achieving “perfection” reduces enjoyment of the moment.
“On the other hand, if you record a snapshot because it’s your favourite song, then it can improve memory later,” Dr. Henkel said.
#16 Edgar Allan Poe, 1849

While he looks somber here, this is the creative force who essentially invented the modern detective story and defined American horror with works like "The Raven." It’s a haunting final glimpse of a literary genius who spent his career cultivating mystery, only to leave us with one of his own.
#17 Harriet Beecher Stowe, 1870-1880

She spent years touring the country to push those abolitionist views, yet she occupied a complicated space in history. Even as she fought for the liberation of others with her pen and philanthropy, she was navigating a society where the fight for women’s rights had barely even begun.
#18 Helen Keller, 1904

She became a prolific writer, a lecturer, and a fierce advocate for labor rights and women's suffrage. Her impact was so profound that she was invited to the White House by every single U.S. President from Grover Cleveland to Lyndon B. Johnson, spending her life proving that physical limitations didn't equate to a lack of capacity.
#19 Wilbur And Orville Wright, 1909

This 1909 snapshot captures the duo who, only a few years earlier, had changed the world forever. First with that historic sustained flight in 1903, and then by building the first truly practical airplane in 1905.
#20 Susan B. Anthony, 1890

Anthony was the driving force behind the American women's suffrage movement and the one-time president of the National Woman Suffrage Association. Although she didn't live to see the final victory, her relentless campaigning laid the necessary groundwork for the Nineteenth Amendment, which finally granted women the right to vote in 1920.



