William H. Taft (U.S.) 1857
- 1775 - An early and unofficial American flag was raised by Lieutenant Colonel Isaac Mott after the seizing of Fort Johnson from the British. The flag was dark blue with the white word "Liberty" spelled on it.
- 1909 - Charles F. Kettering applied for a patent on his ignition system. His company Delco (Dayton Engineering Laboratories Company) later became a subsidiary of General Motors.
- 1928 - Alexander Fleming discovered the antibiotic penicillin in the mold Penicillium notatum.
- 1935 - The Nuremberg Laws were enacted by Nazi Germany. The act stripped all German Jews of their civil rights and the swastika was made the official symbol of Nazi Germany.
- 1997 - The domain name "google.com" was registered.
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