The cornerstone of the White House was laid, marking the first day of construction.
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Charles Messier discovered the Whirlpool Galaxy.
James Wallace Black took the USA's first aerial photo in Boston from a hot air balloon.
Cellular mobile phone service was made available to the American public for the first time.
The Safety Hood, which would later become the gas mask, was patented by Garrett Morgan.
Microsoft purchased Activision Blizzard in a record-breaking $69 billion takeover.