In September 1959, Soviet Premier Nikita Khrushchev made an unprecedented visit to America, creating a media circus as he traveled from coast to coast.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
In 1978 over 900 people led by Rev. Jim Jones died in the largest mass murder-suicide in history, at Jonestown, Guyana.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
A new religion called spiritualism affected the nation in the era of Abraham Lincoln, P. T. Barnum and Frederick Douglass.
Clemente was an exceptional baseball player whose career sheds light on larger issues of immigration, civil rights and cultural change.