Samuel Langhorne Clemens, known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer. He was lauded as the "greatest humorist this country has produced", and William Faulkner called him "the fa...

Andrew Carnegie was a Scottish American industrialist who led the enormous expansion of the American steel industry in the late 19th century. He was also one of the highest profile philanthropists of his era and had given away almost 90 per...

James Butler Hickok, known as "Wild Bill" Hickok, was a folk character of the American Old West. Some of his exploits as reported at the time were fictionalized, but his skills as a gunfighter and gambler provided the basis for his enduring...

Sitting Bull, Hunkpapa Sioux Leader and Medicine Man, born about 1837. He was the principal chief of the Dakota Sioux, who were driven from their reservation in the Black Hills by miners in 1876, and took up arms against the whites and fri...

John Pierpont Morgan was an American financier, banker and art collector who dominated corporate finance and industrial consolidation during his time. In 1892 Morgan arranged the merger of Edison General Electric and Thompson-Houston Electr...

John Wilkes Booth was an American stage actor who assassinated President Abraham Lincoln at Ford's Theatre, in Washington, D.C., on April 14, 1865. Booth was a member of the prominent 19th century Booth theatrical family from Maryland and,...

John Muir was a Scottish-American naturalist, author, and early advocate of preservation of wilderness in the United States. His letters, essays, and books telling of his adventures in nature, especially in the Sierra Nevada mountains of Ca...

George Armstrong Custer was a United States Army officer and cavalry commander in the American Civil War and the Indian Wars. Raised in Michigan and Ohio, Custer was admitted to West Point in 1858, where he graduated last in his class. Howe...

Josiah Willard Gibbs was an American theoretical physicist, chemist, and mathematician. He devised much of the theoretical foundation for chemical thermodynamics as well as physical chemistry. As a mathematician, he invented vector analysis...

John Davison Rockefeller, Sr. was an American industrialist who played a prominent role in the early oil industry with the founding of Standard Oil (ExxonMobil is the largest of its descendants). Over a forty-year period, Rockefeller built...

Crazy Horse was a Native American war leader of the Oglala Lakota. He took up arms against the U.S. Federal government to fight against encroachments on the territories and way of life of the Lakota people, including leading a war party at...

Gall Lakota Phizí, was a battle leader of the Hunkpapa Lakota in the long war against the United States. He was one of the commanders in the Battle of Little Bighorn. Gall was said to receive his nickname after eating the gall of an animal...

William Frederick "Buffalo Bill" Cody was an American soldier, bison hunter and showman. He was born in the Iowa Territory (now the American state of Iowa), near LeClaire. He was one of the most colorful figures of the American Old West, an...

Wyatt Berry Stapp Earp was an American officer of the law in various Western frontier towns, farmer, teamster, buffalo hunter, gambler, saloon-keeper, miner and boxing referee. He is best known for his participation in the Gunfight at the O...

Anténor Firmin was a Haitian anthropologist, journalist, and politician. Firmin is best known for his book De l'Égalité des Races Humaines (English: On the Equality of Human Races), which was published as a rebuttal to French writer Count A...