1887 – Helen Keller learns w.a.t.e.r from teacher Anne Sullivan.
1901 – Hattie Alexander is born. She became a pediatrician and microbiologist who identified and studied antibiotic resistance caused by random genetic mutations in DNA. She was the first woman elected president of the American Pediatric Society.
1911 – 100,000 to 500,000 people march in New York City to attend the funeral of seven unidentified victims of the Triangle Shirtwaist Company fire in late March
1937 – Colin Powell is born.
1955 – Winston Churchill retires as prime minister.