1

Abraham Lincoln being sworn in for his reelection in 1864. His eventual killer, John Wilkes Booth, is on the balcony above.

2

Ernest Hemingway chillin’ in the tub.

3

A mountain of bison skulls waiting to be ground for fertilizer, 1892.

4

A young Winston Churchill in 1895.

5

Hitler’s 4th grade class (he is in the middle of the top row), 1899

6

John Lennon’s glasses after he was murdered in New York City by a crazed fan in 1980.

7

John Quincy Adams posing for the first official presidential portrait, 1843

8

The last public execution ever held in the United States occurs in 1936.

9

Opening ceremonies at the first Woodstock Festival.

10

Gold Diggers headed to Dawson City in 1898

11

Albert Einstein visiting the Grand Canyon.

12

Lincoln right after giving the Gettysburg Address.

13

German troops and a pack mule during WWI.

14

Tesla sitting next to his magnifying transmitter as it generates millions of volts.

15

One of the first expeditions to Antarctica.

16

George Washington’s face being sculpted into Mount Rushmore.

17

The first atomic bomb with an unidentified man shortly before the test.

18

Lincoln after the Battle of Antietam, the bloodiest day of the Civil War. The Union held off the Confederacy’s attempt at invading the north, but both sides took heavy losses — 23,000 combined casualties.

19

Howard Carter (kneeling) opens the door of King Tut’s burial chamber for the first time in 1923.

20

The last photo taken of The Titanic before it sank. The snapshot was taken by passengers who traveled on only the first leg of the journey.

21

The first photograph of Abraham Lincoln, 1846, taken when he was the Congressman-elect from Illinois.

22

Testing a bulletproof vest in Washington DC, 1923. The vest is made of ballistic nylon and provided protection against older firearms as well as ricochets and fragments. The bulletproof vest wouldn’t be able to stop modern ammo until the 1960s with the invention of kevlar.

23

Mark Twain playing with Nikolai Tesla’s experimental vacuum lamp as Tesla watches. The photo was taken for an issue of Century Magazine in April 1895.

24

The detonation of a nuclear bomb at Bikini Atoll, Micronesia, 1945. A number of ships were contaminated by the radioactivity in the water and had to be sunk several miles off the coast of San Francisco.

25

Men standing in a pipe during the construction of the Hoover Dam in the 1930s. The reservoir created by the dam, called Lake Meade, is the largest reservoir in the world.

26

The 2,800 year old kiss. These two skeletons locked in an embrace were discovered in the West Azerbaijan Province of Iran in 1972. The skeletons were both young (20s or 30s) and had no signs of poor health.