Mother's Day became a public holiday.
Explorers Richard E. Byrd and Floyd Bennett flew over the North Pole.
The Beatles signed their first recording contract and hired George Martin to be their producer.
It took the Chicago White Sox 25 innings, eight hours, and six minutes, over two days, to finally defeat the Milwaukee Brewers, 7-6. It was the longest game (in elapsed time) in major-league history.
Chechnya's Moscow-backed leader, Akhmad Kadyrov, was killed in a bombing. Six others were killed and another 60 wounded.