On April 27:
- 1667 - The blind, impoverished John Milton sold the copyright of Paradise Lost for £10.
- 1865 - The steamboat Sultana exploded and sunk in the Mississippi River, killing 1,700.
- 1909 - Sultan of Turkey Abdul Hamid II was overthrown by his brother Murat V.
- 1961 - Sierra Leone was granted independence from the United Kingdom.
- 1967 - Expo 67 opened in Montreal, Quebec.
On April 27:
- 1667 - The blind, impoverished John Milton sold the copyright of Paradise Lost for £10.
- 1865 - The steamboat Sultana exploded and sunk in the Mississippi River, killing 1,700.
- 1909 - Sultan of Turkey Abdul Hamid II was overthrown by his brother Murat V.
- 1961 - Sierra Leone was granted independence from the United Kingdom.
- 1967 - Expo 67 opened in Montreal, Quebec.