Sirhan Sirhan assassinated Robert F. Kennedy, the late President Kennedy’s younger brother.
Source
Montenegro became the 29th country to join NATO.
Registration of US men aged between 21 and 31 began for troops for WWI.
Baltimore and Philadelphia were linked up by telegraph.
The US Neutrality Act was enacted.
NASA's STS-40 became the first spaceflight with three women to be launched into space.
