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