June 6, 1844: The first YMCA was founded in London, England.
June 7, 1866: Death of Chief Seattle <http://www.history.com/this-day-in-history/chief-seattle-dies-near-the-city-named-for-him>
June 20, 1837: King William IV passes away, leaving his niece Victoria to become Queen of England.
June 20, 1887: Queen Victoria's Golden Jubilee
June 25, 1876: Alexander Graham Bell demonstrates his telephonic apparatus at the Philadelphia Centennial Exposition
June 28, 1838: Victoria crowned queen of England
June 30, 1859: Aerialist Charles Blondin (Jean François Gravelet) crosses Niagara Falls on a hemp cable more than a thousand feet long. Sources: Linda Simon, The Greatest Shows on Earth, pp. 121, 122., <https://www.smithsonianmag.com/history/the-daredevil-of-niagara-falls-110492884/>
June 12th: National Red Rose day