[Former heavyweight champion Muhammad Ali with sparring partner Gene Wells, Navy Pier Gym, Chicago]

[Cassius Clay speaking at a press conference, Boston]

[Muhammad Ali announcing his exhibition matches against Eddie "Bossman" Jones and Charles James, Chicago]

[Rev. H. Ralph Jackson, Martin Luther King Jr., and Rev. Ralph Abernathy, at a civil rights march, Memphis]

[Martin Luther King Jr. speaking at Illinois Labor Convention, Springfield]

[John Glenn, Mercury Control Center, Cape Canaveral, Florida]

[John Glenn, Cape Canaveral, Florida]

[John Glenn checking out Mercury spacecraft, Cape Canaveral, Florida]