Here’s a look at some interesting events that took place on this day in history:

1848 – James W. Marshall finds gold at Sutter’s Mill near Sacramento, triggering the California Gold Rush (More info)

1908 – In England, Robert Baden-Powell organizes the first Boy Scout troop (More info)

1972 – Japanese soldier Shoichi Yokoi is discovered in Guam, where he’d spent 28 years hiding in the jungle thinking World War II was still underway (More info)

1984 – The Apple Macintosh, the first commercially successful personal computer to use a graphical user interface, goes on sale (More info)

2003 – The United States Department of Homeland Security officially begins operating (More info)