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Arts & Culture
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 June 13, 2019

On this date in 1917, the deadliest World War I air raid took place. And in 1920, the United States Postal Service created a rule banning an interesting item from being sent via parcel post.