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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 October 22, 2020

Replica of Chester Carlson's original Xerox copier at the Battelle Memorial Institute in Columbus, Ohio.
LIBRARY OF CONGRESS
Replica of Chester Carlson's original Xerox copier at the Battelle Memorial Institute in Columbus, Ohio.

It was on this date in 1934, Charlie Arthur "Pretty Boy" Floyd was gunned down in East Liverpool, Ohio. And it was on this date 1938, Chester Carlson invented the Xerographic process.