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Mark Pennell sits at the helm of his time machine.Mark's Almanac is a 90-second time travel that highlights the world's history from the very serious to the sometimes sublime.

Mark's Almanac for September 29, 2020.

Photo of John D. Rockefeller.
Arnold Genthe
/
LIBRARY OF CONGRESS
Photo of John D. Rockefeller.

It was on this date in 1916, John D. Rockefeller became the world's first billionaire. And it was on this date in 1966, a totally new class of car was born.