This Day, That Year – September 29

American oil tycoon, John D. Rockefeller, became the world’s first billionaire on this day in 1916.

Did you know that:

• Paul MacCready, an American engineer who created the first human-powered aircraft, was born on this day in 1925
• The first electronic telephone answering machine was created by Bell Laboratories on this day in 1950
• Ashley Nicolette Frangipane, known professionally as Halsey, is an American singer and songwriter born on this day in 1994