April 1 » In New York City, the United States House of Representatives achieves its first quorum and elects Frederick Muhlenberg of Pennsylvania as its first Speaker.
July 10 » Alexander Mackenzie reaches the Mackenzie River delta.
September 22 » The office of United States Postmaster General is established.
September 26 » George Washington appoints Thomas Jefferson the first United States Secretary of State.
September 29 » The United States Department of War first establishes a regular army with a strength of several hundred men.
October 3 » George Washington proclaims a Thanksgiving Day for that year.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I8128.php : accessed January 23, 2026), "Johan Adam Meyer SV/PROG (1709-1789)".
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