The man who saved the lives of his PT-109 crewmen during WWII and became the 35th US president fought - and won - his first battle at the age of two-and-a-half, when he was stricken with scarlet fever. Although his presidency was cut short, our nation's youngest elected leader left an indelible mark on the American consciousness and now is profiled in our Who Was...? series.

Much like her hit TV show, I Love Lucy, Americans in the 1950s fell in love with Lucy. Born in New York in 1911, Lucille Ball was always a natural performer. She danced in the chorus of Broadway shows and acted in small parts in Hollywood movies. But Ball's true gift was comedy. She found a way to showcase her gifts in 1951 when CBS gave her the chance to star in a sitcom.

Born in the British West Indies and orphaned as a child, Alexander Hamilton made his way to the American colonies and studied to become a lawyer. He joined a local militia during the American Revolution, rose to the rank of major general, and became the chief aide to General George Washington. After the war he became the first US secretary of the Treasury. He founded the Bank of New York and the New York Post newspaper.

One day in 1882, Thomas Edison flipped a switch that lit up lower Manhattan with incandescent light and changed the way people live ever after. The electric light bulb was only one of thousands of Edison’s inventions, which include the phonograph and the kinetoscope, an early precursor to the movie camera. As a boy, observing a robin catch a worm and then take flight, he fed a playmate a mixture of worms and water to see if she could fly! An accessible, appealing biography of the inventor.

On December 7, 1941, Japanese war planes appeared out of nowhere to bomb the American base at Pearl Harbor in Hawaii. It was a highly secretive and devastating attack: Four battleships sunk, more than 2,000 servicemen died, and the United States was propelled into World War II. In a compelling, easy-to-digest narrative, children will learn all about a pivotal moment in American history.

Ever since Howard Carter uncovered King Tutankhamun’s tomb in 1922, the young pharaoh has become a symbol of the wealth and mystery of ancient Egypt. This Who Was...? explains the life and times of this ancient Egyptian ruler, covering the story of the tomb’s discovery, as well as myths and so-called mummy curses.

Born in Warsaw, Poland, on November 7, 1867, Marie Curie was forbidden to attend the male-only University of Warsaw, so she enrolled at the Sorbonne in Paris to study physics and mathematics. There she met a professor named Pierre Curie, and the two soon married, forming one of the most famous scientific partnerships in history. Together, they discovered two elements and won a Nobel Prize in 1903. (Later, Marie won another Nobel award for chemistry in 1911.)

As a kid, Jackie Robinson loved sports. And why not? He was a natural at football, basketball, and, of course, baseball. But beyond athletic skill, it was his strength of character that secured his place in sports history. In 1947 Jackie joined the Brooklyn Dodgers, breaking the long-time color barrier in major league baseball. It was tough being first - not only did "fans" send hate mail but some of his own teammates refused to accept him.

On July 20, 1969, Neil Armstrong stepped on the moon and, to an audience of over 450 million people, proclaimed his step a giant leap for mankind. This Eagle Scout built his own model planes as a little boy and then grew up to be a test pilot for experimental aircraft before becoming an astronaut.

Dr. Martin Luther King, Jr., was only 25 when he helped organize the Montgomery bus boycott and was soon organizing black people across the country in support of the right to vote, desegregation, and other basic civil rights. Maintaining nonviolent and peaceful tactics even when his life was threatened, King was also an advocate for the poor and spoke out against racial and economic injustice until his death - from an assassin's bullet - in 1968.

A humorist, narrator, and social observer, Mark Twain is unsurpassed in American literature. Best known as the author of The Adventures of Huckleberry Finn, Mark Twain, not unlike his protagonist, Huck, has a restless spirit. He found adventure prospecting for silver in Nevada, navigating steamboats down the Mississippi, and making people laugh around the world. But Twain also had a serious streak and decried racism and injustice. His fascinating life is captured candidly in this enjoyable biography.

Nelson Mandela is one of the great moral and political leaders of our time: an international hero whose lifelong dedication to the fight against racial oppression in South Africa won him the Nobel Peace Prize and the presidency of his country. Since his triumphant release in 1990 from more than a quarter-century of imprisonment, Mandela has been at the center of the most compelling and inspiring political drama in the world.

In her amazing diary, Anne Frank revealed the challenges and dreams common for any young girl. But Hitler brought her childhood to an end and forced her and her family into hiding. Who Was Anne Frank? looks closely at Anne’s life before the secret annex, what life was like in hiding, and the legacy of her diary.

Born to a family of farmers, Lincoln stood out from an early age - literally! (He was six feet four inches tall.) As 16th president of the United States, he guided the nation through the Civil War and saw the abolition of slavery. But Lincoln was tragically shot one night at Ford’s Theater - the first president to be assassinated.

Leonardo da Vinci was a gifted painter, talented musician, and dedicated scientist and inventor, designing flying machines, submarines, and even helicopters. Yet he had a hard time finishing things, a problem anyone can relate to. Only 13 paintings are known to be his; as for the illustrated encyclopedia he intended to create, all that he left were thousands of disorganized notebook pages. Here is an accessible portrait of a fascinating man who lived at a fascinating time - Italy during the Renaissance.