The Beatles gave their last public performance, on the roof of Apple Studios in London
Vietnam War: The Tet Offensive began .
Death of Ernst Heinkel, German aviation engineer .
French fashion designer Yves Saint Laurent held his first major show in Paris, aged 22.
Death of Mahatma Gandhi, Indian political and spiritual leader, assassinated by a Hindu extremist.
Death of Orville Wright, American aviation pioneer .
Death of Frank Doubleday, American publisher
Adolf Hitler became Chancellor of Germany .
Birth of Edward Martyn, Irish dramatist and political activist, co-founderof the Irish Literary Theatre, first President of Sinn Féin
Telford's Menai Straits Bridge opened – considered the world's first modern suspension bridge
Charles I beheaded