Sirhan Sirhan assassinated Robert F. Kennedy, the late President Kennedy’s younger brother.
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Baltimore and Philadelphia were linked up by telegraph.
NASA's STS-40 became the first spaceflight with three women to be launched into space.
Registration of US men aged between 21 and 31 began for troops for WWI.
Uncle Tom's Cabin, an anti-slavery novel by Harriet Beecher, was first published.
A strike began at a General Motors parts factory.
