2nd » The first game of the Negro National League (1920-1931) called Negro National League baseball is played in Indianapolis.
3rd » A 1920 Georgian coup attempt named Bolshevik coup fails in the Democratic Republic of Georgia.
5th » Authorities arrest Nicola Sacco and Bartolomeo Vanzetti for alleged robbery and murder.
7th » Treaty of Moscow (1920) called Treaty of Moscow: Russian SFSR named Soviet Russia recognizes the independence of the Democratic Republic of Georgia only to invade the country six months later.
7th » The Art Gallery of Ontario, in Toronto, opens the first exhibition by the Group of Seven (artists) e.g Group of Seven.
9th » Polish-Soviet War: The Polish army under General Edward Rydz-Śmigły celebrates its 1920 Kiev Offensive known as capture of Kiev with a victory parade on Khreschatyk.
16th » In Rome, Pope Benedict XV Canonization of Joan of Arc called canonizes Joan of Arc.
20th » Montreal, Quebec radio station XWA broadcasts the first regularly scheduled radio programming in North America.
Famous Birthdays on May in 1920
2nd » Jean-Marie Auberson, Swiss violinist and conductor (d. 2004)
2nd » Otto Buchsbaum, Austrian-Brazilian activist (d. 2000)
2nd » Vasantrao Deshpande, Indian singer and sitar player (d. 1983)
2nd » Guinn Smith, American pole vaulter (d. 2004)
3rd » John Lewis (pianist) or John Lewis, American pianist and composer (Modern Jazz Quartet) (d. 2001)
6th » Raymond Fernandez and Martha Beck named Martha Beck, American murderer (d. 1951)
6th » Ross Hunter, American actor and producer (d. 1996)
6th » Kamisese Mara, Fijian politician, 1st Prime Minister of Fiji (d. 2004)
8th » Saul Bass, American graphic designer and director (d. 1996)
8th » Tom of Finland, Finnish illustrator (d. 1991)
8th » Sloan Wilson, American author (d. 2003)
8th » Gordon McClymont, Australian ecologist and educator (d. 2000)