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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 April 1, 2021

Picture of a Wrigley's gum ad on the side of a Florida brick building.
CAROL HIGHSMITH
/
LIBRARY OF CONGRESS
An old Wrigley's Spearmint Gum advertising mural on a wall along a park in Trenton, Florida.

It was on this date in 1891 that William Wrigley Jr. moved to Chicago to open a new branch of his father's product, Wrigley's Scouring Soap. And it was on this date in 1929 that Lewis Marx introduced his version of the yo-yo.