This Day, That Year – April 11

The twelfth-century Lewis chess pieces were exhibited at the Society of Antiquaries of Scotland on this day in 1831, shortly after they were rediscovered on the Scottish Isle of Lewis.

Did you know that:

• Adriano Olivetti was an Italian manufacturer of typewriters, calculators, and computers, born on this day in 1901
• Frank Piasecki designed and flew his first (single-rotor) craft, the Piasecki Helicopter, on this day in 1943
• Shuttle astronauts were the first to repair a satellite in space on this day in 1984