Grats on .25 of a century :-)
1779 American commander John Paul Jones is said to have declared, "I have not yet begun to fight!" during a Revolutionary War naval battle.
1806 The Lewis and Clark expedition returned to St. Louis from the Pacific Northwest.
1846 The planet Neptune was discovered by German astronomer Johann Gottfried Galle.
http://apod.nasa.gov/apod/ap070923.html