Exiled Soviet leader Leon Trotsky was assassinated with an ice axe in Mexico City.
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The Erickson Brothers submitted the application for the first dial telephone patent.
Mother Teresa contracted malaria and spent one week in hospital in New Delhi, India.
NASA launched the Viking 1 planetary probe toward Mars.
A suicide bomber killed 57 people while injuring 66 in Gaziantep, Turkey.
England was defeated by South Africa, who became top of the world Test cricket rank.
