On this day in 1920, the first commercial radio station, 8MK (now WWJ), began operations in Detroit, Michigan.
On this day in 1926, Japan's public broadcasting company, Nippon Hōsō Kyōkai (NHK) was established.
On this day in 1938, Lou Gehrig hit his 23rd career grand slam, a record that stood for 75 years until it was broken by Alex Rodriguez.
On this day in 1940, British Prime Minister Winston Churchill made the fourth of his famous wartime speeches, containing the line "Never was so much owed by so many to so few".
On this day in 1972, the Republic of China Mei Ho baseball team defeated a US team from California 9-0 to win the Senior League world title.