- September 10, 0506 The bishops of Visigothic Gaul meet in the Council of Agde.
- September 10, 0954 “France’s Louis IV dies September 10 at age 33 and is succeeded by his son Lothair, 13, who will reign until 986

- September 10, 1349 Jews who survived a massacre in Constance Germany are burned to death
- September 10, 1419 “John the Fearless, Duke of Burgundy is assassinated by adherents of the Dauphin, the future Charles VII of France.”
- September 10, 1543 DeSoto’s expedition returns to Mexico.
- September 10, 1608 “John Smith elected president of Jamestown colony council, Va”
- September 10, 1776 “George Washington asks for a spy volunteer, Nathan Hale volunteers”
- September 10, 1798 “At the Battle of St. George’s Caye, British Honduras defeats Spain.”
- September 10, 1798 British Hondurus beats Spain in battle of St George
- September 10, 1810 “The British secretary of state for foreign affairs George Canning, 40, resigns September 9, saying that the War Office is hampering progress in the Peninsular War
- September 10, 1813 Comm Oliver H Perry defeats the British in the Battle of Lake Erie
- September 10, 1813 The Americans defeat the British naval forces in the Battle of Lake Erie during the War of 1812.
- September 10, 1813 The U.S. defeats the British Fleet at the Battle of Lake Erie during the War of 1812.
- September 10, 1823 Simn Bolvar is named President of Peru.
- September 10, 1846 Elias Howe receives a US patent for his hand-crank sewing machine.
- September 10, 1847 The first theater opens in Hawaii
- September 10, 1849 “Edwin Booth, later to assassinate president Abraham Lincoln, makes his acting debut.”
- September 10, 1858 George Mary Searle discovers the asteroid 55 Pandora.
- September 10, 1869 “Baptist minister invents the rickshaw in Yokohama, Japan”
- September 10, 1897 “Lattimer Massacre – a sheriff’s posse kills twenty unarmed immigrant miners in Pennsylvania, United States.”
- September 10, 1898 Empress Elizabeth of Austria is assassinated by Luigi Lucheni.
- September 10, 1899 2nd quake in 7 days hits Yakutat Bay Alaska
- September 10, 1899 “In the Yakutat Bay, Alaska area, one of the 15 Largest Earthquakes in the United States, measured at 8.2”
- September 10, 1910 Great Idaho Fire destroys 3 million acres of timber
- September 10, 1913 Cleveland Call & Post established
- September 10, 1913 “George W Buckner, named minister to Liberia”
- September 10, 1913 Lincoln Highway opens as 1st paved coast-to-coast highway
- September 10, 1916 “The suspension span ofQuebec Bridge over the St. Lawrence which was being lifted, buckled and fell into the river killing 10 – 12 workmen.”
- September 10, 1919 “Austria and the Allies sign the Treaty of Saint-Germain recognizing the independence of Poland, Hungary, Czechoslovakia and Yugoslavia.”
- September 10, 1919 “NYC welcomes home Gen John J Pershing & 25,000 WW I soldiers”
- September 10, 1924 Leopold & Loeb found guilty of murder
- September 10, 1927 “France had its first Davis Cup win, though it had competed since 1905.”
- September 10, 1930 “Charles E Mitchell, named minister to Liberia”
- September 10, 1932 “The New York City Subway’s third competing subway system, the municipally-owned IND, is opened.”
- September 10, 1939 “Canada declares war on Nazi Germany, joining France, the UK, New Zealand and Australia in the Allies.”
- September 10, 1939 “HMS OXLEY, sunk by “”friendly fire “” off Norwegian coast, south of Stavanger in North Sea torpedoed in error by RN submarine ‘Triton’.”
- September 10, 1939 World War II: The submarine HMAS Oxley is mistakenly sunk by the submarine HMS Triton near Norway and becomes the Royal Navy’s first loss.
- September 10, 1943 “Tottori, Japan a 7.4 quake resulted in 1,190 deaths. One of the world’s deadliest earthquakes.”
- September 10, 1945 Vidkun Quisling sentenced to death for collaborating with Nazis
- September 10, 1951 United Kingdom began an economic boycott of Iran.