It was on this day in 1910 that an event occurred that would make delivering mail easier down the road. What was it? And 1933, the voters of Pennsylvania overturned something called "the blue law". Find out why that was so significant during today's Mark's Almanac.
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.