June 14, 1834 – Isaac Fischer Jr., of Springfield, Vermont, is granted a patent for the mass production of sandpaper.
June 14, 1922 – Warren G. Harding becomes the first U. S. President to broadcast a message over the radio. The event was the dedication of the Francis Scott Key Memorial in Baltimore.
June 15, 1215 – King John set his seal to the Magna Carta guaranteeing certain rights of liberty. It becomes the foundation of modern democracies around the world.
June 18, 1815 – On the fields of Waterloo in central Belgium, 72,000 French troops led by Napoleon suffer a crushing military defeat from a combined army of 113,000 British, Dutch, Belgian, and Prussian troops.