O. Henry (1862-1910) had a short but colourful life. Born William Porter in Greensboro, North Carolina, he initially worked as a pharmacist before moving into journalism. In 1896 he was arrested for embezzling funds while working as a bookkeeper for a bank.

In a moment of madness, he absconded on his way to the courthouse before his trial and fled to Honduras for six months. He returned to face trial after learning that his wife was dying of tuberculosis and served three years in jail. While in prison, he adopted the pen name O. Henry, and after his release he found great fame and popularity as a short story writer.

Samuel Langhorne Clemens, better known by his pen name, Mark Twain, was born on November 30, 1835, in the tiny village of Florida, Missouri.

Writing grand tales about Tom Sawyer, Huckleberry Finn and the mighty Mississippi River, Mark Twain explored the American soul with wit, buoyancy, and a sharp eye for truth. He became nothing less than a national treasure.

Washington Irving was born in 1783 in New York City. In addition to writing fiction, Irving studied law, worked for his family's business in England and wrote essays for periodicals.

Some of his most famous tales, including Rip Van Winkle and The Legend of Sleepy Hollow, were first published under the pseudonym Geoffrey Crayon.

Nathaniel Hawthorne was born in Salem, Massachusetts, where he wrote the bulk of his masterful tales of American colonial history.

His career as a novelist began with The Scarlet Letter (1850) and also includes The house of the Seven Gables, The Blithedale Romance, and The Marble Faun.

Ralph Waldo Emerson (May 25, 1803-April 27, 1882) was a famous lecturer, philosopher, poet, and writer. He led the transcendentalist movement of the 1800s, mentored Henry David Thoreau, and was a pioneer of multiculturalism in American writing.

Walt Whitman (1819-1892) was a celebrated American poet, chiefly known for his controversial and highly original poetry collection Leaves of Grass. Born in 1819 on Long Island, he worked as a journalist, teacher, government clerk, and volunteer nurse during the Civil War.

Whitman published his seminal work in 1855 with his own money, soon becoming one of the world's most popular and influential poets. After suffering a stroke in 1873 he retired to Camden, New Jersey, where he died nineteen years later - just two months after the final edition of Leaves of Grass appeared on sale.

Charlotte Perkins Gilman (1860-1935) championed women's rights in her prolific fiction, nonfiction, and poetry. In addition to writing books, she produced a magazine of essays, fiction, opinion pieces, and poetry that spoke to women's issues and social reform: seven volumes of The Forerunner were produced, running from 1909 to 1916.

Harriet Beecher Stowe was born in Litchfield, Connecticut, in 1811, the seventh child of a well-known Congregational minister, Lyman Beecher. The family moved to Cincinnati, Ohio, where she met and married Calvin Stowe, a professor of theology, in 1836.

Living just across the Ohio River from the slave-holding state of Kentucky, and becoming aware of the plight of escaping slaves, led her to write Uncle Tom’s Cabin, published in book form in 1842. She wrote the novel amidst the difficulties of bringing up a large family of six children.

The runaway success of Uncle Tom’s Cabin made its author a well-known publish figure. Stowe died in 1896.

Bill Nye is a science educator, mechanical engineer, television host, and New York Times bestselling author with a mission: to help foster a scientifically literate society.