February 9 » American Revolutionary War: The British Parliament declares Massachusetts in rebellion.
April 18 » American Revolution: The British advancement by sea begins; Paul Revere and other riders warn the countryside of the troop movements.
June 14 » American Revolutionary War: the Continental Army is established by the Continental Congress, marking the birth of the United States Army.
July 26 » The office that would later become the United States Post Office Department is established by the Second Continental Congress. Benjamin Franklin of Pennsylvania takes office as Postmaster General.
July 27 » Founding of the U.S. Army Medical Department: The Second Continental Congress passes legislation establishing "an hospital for an army consisting of 20,000 men."
August 20 » The Spanish establish the Presidio San Augustin del Tucson in the town that became Tucson, Arizona.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P21738.php : accessed January 24, 2026), "Gideon Lyman Jr (1730-1775)".
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