The coal miners' battle for dignity led to the largest armed insurrection since the American Civil War.
A civil rights leader in Harlem before entering politics, Powell was one of the most charismatic black leaders of the 20th century.
A brilliant scientist, Oppenheimer was tasked with the development of the atomic bomb during World War II.
With data compiled from tens of thousands of sex questionnaires, Alfred Kinsey changed America's views about sex with the Kinsey Reports.
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.
America's first great songwriter, Stephen Foster, wrote 200 songs but died a penniless alcoholic at 37.
In August 1942 the murder of a young Mexican American man ignited a firestorm in Los Angeles, ultimately sparking brutal race riots.
Martha Ballard was a midwife and mother in Maine following the American Revolution.