In 1582, the Gregorian calendar went into effect.
In 1957, the Soviet Union launched the satellite Sputnik.
In 1927, Gutzon Borglum began carving the faces of four presidents into the side of Mount Rushmore in South Dakota’s Black Hills National Forest.
In 1970, singer Janis Joplin died of a heroin overdose.
In 1955, the underdog Brooklyn Dodgers b ... Show More