Martha Ballard was a midwife and mother in Maine following the American Revolution.
The staggering death tolls of the Civil War permanently altered the character of the republic and the psyche of the American people.
George Eastman introduced the Kodak and Brownie camera systems and transformed photography into something anybody could do.
President Richard Nixon and Henry Kissinger initiated a secret diplomatic breakthrough with Mao Tse-tung that shocked and changed the world.
Mathematician and paranoid schizophrenic John Nash's work became a foundation of modern economic theory.
Their intense faith and strict adherence to 300-year-old traditions have by turn captivated and repelled, awed and irritated, inspired and confused America.
Franklin Roosevelt restored hope after the Great Depression and led the nation during World War II. Part of the award-winning Presidents collection.
How five abolitionist allies turned a despised fringe movement against chattel slavery into a force that literally changed the nation.